{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T11:39:59Z","timestamp":1774611599936,"version":"3.50.1"},"reference-count":64,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2023,1,10]],"date-time":"2023-01-10T00:00:00Z","timestamp":1673308800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2023,1,10]],"date-time":"2023-01-10T00:00:00Z","timestamp":1673308800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100004901","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de Minas Gerais","doi-asserted-by":"publisher","award":["APQ-00208-20"],"award-info":[{"award-number":["APQ-00208-20"]}],"id":[{"id":"10.13039\/501100004901","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["465518\/2014-1"],"award-info":[{"award-number":["465518\/2014-1"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["147122\/2021-0"],"award-info":[{"award-number":["147122\/2021-0"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["305837\/2021-4"],"award-info":[{"award-number":["305837\/2021-4"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior","doi-asserted-by":"publisher","award":["88887.507149\/2020-00"],"award-info":[{"award-number":["88887.507149\/2020-00"]}],"id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Pregnancy Childbirth"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>\n                      The assessment of clinical prognosis of pregnant COVID-19 patients at hospital presentation is challenging, due to physiological adaptations during pregnancy. Our aim was to assess the performance of the ABC\n                      <jats:sub>2<\/jats:sub>\n                      -SPH score to predict in-hospital mortality and mechanical ventilation support in pregnant patients with COVID-19, to assess the frequency of adverse pregnancy outcomes, and characteristics of pregnant women who died.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This multicenter cohort included consecutive pregnant patients with COVID-19 admitted to the participating hospitals, from April\/2020 to March\/2022. Primary outcomes were in-hospital mortality and the composite outcome of mechanical ventilation support and in-hospital mortality. Secondary endpoints were pregnancy outcomes. The overall discrimination of the model was presented as the area under the receiver operating characteristic curve (AUROC). Overall performance was assessed using the Brier score.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      From 350 pregnant patients (median age 30 [interquartile range (25.2, 35.0)] years-old]), 11.1% had hypertensive disorders, 19.7% required mechanical ventilation support and 6.0% died. The AUROC for in-hospital mortality and for the composite outcome were 0.809 (95% IC: 0.641\u20130.944) and 0.704 (95% IC: 0.617\u20130.792), respectively, with good overall performance (Brier\u2009=\u00a00.0384 and 0.1610, respectively). Calibration was good for the prediction of in-hospital mortality, but poor for the composite outcome. Women who died had a median age 4 years-old higher, higher frequency of hypertensive disorders (38.1% vs. 9.4%,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001) and obesity (28.6% vs. 10.6%,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.025) than those who were discharged alive, and their newborns had lower birth weight (2000 vs. 2813,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.001) and five-minute Apgar score (3.0 vs. 8.0,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>\n                      The ABC\n                      <jats:sub>2<\/jats:sub>\n                      -SPH score had good overall performance for in-hospital mortality and the composite outcome mechanical ventilation and in-hospital mortality. Calibration was good for the prediction of in-hospital mortality, but it was poor for the composite outcome. Therefore, the score may be useful to predict in-hospital mortality in pregnant patients with COVID-19, in addition to clinical judgment. Newborns from women who died had lower birth weight and Apgar score than those who were discharged alive.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12884-022-05310-w","type":"journal-article","created":{"date-parts":[[2023,1,10]],"date-time":"2023-01-10T05:05:14Z","timestamp":1673327114000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Mechanical ventilation and death in pregnant patients admitted for COVID-19: a prognostic analysis from the Brazilian COVID-19 registry score"],"prefix":"10.1186","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6374-9295","authenticated-orcid":false,"given":"Zilma Silveira Nogueira","family":"Reis","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3312-4002","authenticated-orcid":false,"given":"Magda Carvalho","family":"Pires","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7844-0581","authenticated-orcid":false,"given":"Lucas Emanuel Ferreira","family":"Ramos","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1571-3850","authenticated-orcid":false,"given":"Tha\u00eds Lorenna Souza","family":"Sales","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2406-6576","authenticated-orcid":false,"given":"Polianna","family":"Delfino-Pereira","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8313-7429","authenticated-orcid":false,"given":"Karina Paula Medeiros Prado","family":"Martins","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3467-2150","authenticated-orcid":false,"given":"Andresa Fontoura","family":"Garbini","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/6536-4433-4015-0462","authenticated-orcid":false,"given":"Ang\u00e9lica Gomides dos Reis","family":"Gomes","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4212-519X","authenticated-orcid":false,"given":"Bruno Porto","family":"Pessoa","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1067-6720","authenticated-orcid":false,"given":"Carolina Cunha","family":"Matos","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1973-1343","authenticated-orcid":false,"given":"Christiane Corr\u00eaa Rodrigues","family":"Cimini","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8573-0237","authenticated-orcid":false,"given":"Claudete","family":"Rempel","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6178-6938","authenticated-orcid":false,"given":"Daniela","family":"Ponce","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0429-7641","authenticated-orcid":false,"given":"Felipe Ferraz Martins Gra\u00e7a","family":"Aranha","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2657-5406","authenticated-orcid":false,"given":"Fernando","family":"Anschau","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4991-4941","authenticated-orcid":false,"given":"Gabriela Petry","family":"Crestani","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6891-1087","authenticated-orcid":false,"given":"Genna Maira Santos","family":"Grizende","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9668-1434","authenticated-orcid":false,"given":"Gisele Alsina Nader","family":"Bastos","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6672-0276","authenticated-orcid":false,"given":"Giulia Maria dos Santos","family":"Goedert","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6621-3338","authenticated-orcid":false,"given":"Luanna Silva Monteiro","family":"Menezes","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3603-1987","authenticated-orcid":false,"given":"Marcelo","family":"Carneiro","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5906-3610","authenticated-orcid":false,"given":"Marcia Ffner","family":"Tolfo","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0061-4072","authenticated-orcid":false,"given":"Maria Augusta Matos","family":"Corr\u00eaa","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6213-159X","authenticated-orcid":false,"given":"Mariani Maciel de","family":"Amorim","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2127-8015","authenticated-orcid":false,"given":"Milton Henriques","family":"Guimar\u00e3es J\u00fanior","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5320-8572","authenticated-orcid":false,"given":"Pamela Andrea Alves","family":"Dur\u00e3es","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1370-9073","authenticated-orcid":false,"given":"Patryk Marques da Silva","family":"Rosa","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6920-6435","authenticated-orcid":false,"given":"Petr\u00f4nio Jos\u00e9 de Lima","family":"Martelli","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2091-5772","authenticated-orcid":false,"given":"Rafaela Santos Char\u00e3o de","family":"Almeida","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2167-3645","authenticated-orcid":false,"given":"Raphael Castro","family":"Martins","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1889-3455","authenticated-orcid":false,"given":"Samuel Penchel","family":"Alvarenga","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2559-7128","authenticated-orcid":false,"given":"Eric","family":"Boersma","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2470-3539","authenticated-orcid":false,"given":"Regina Am\u00e9lia Lopes Pessoa de","family":"Aguiar","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4278-3771","authenticated-orcid":false,"given":"Milena Soriano","family":"Marcolino","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2023,1,10]]},"reference":[{"issue":"15","key":"5310_CR1","doi-asserted-by":"publisher","first-page":"8226","DOI":"10.26355\/eurrev_202008_22512","volume":"24","author":"MG Carta","year":"2020","unstructured":"Carta MG, Scano A, Lindert J, Bonanno S, Rinaldi L, Fais S, et al. Association between the spread of COVID-19 and weather-climatic parameters. Eur Rev Med Pharmacol Sci. 2020;24(15):8226\u201331. https:\/\/doi.org\/10.26355\/eurrev_202008_22512.","journal-title":"Eur Rev Med Pharmacol Sci"},{"issue":"6","key":"5310_CR2","doi-asserted-by":"publisher","first-page":"514","DOI":"10.1093\/inthealth\/ihab006","volume":"13","author":"LP Breitling","year":"2021","unstructured":"Breitling LP. Global epidemiology and socio-economic development correlates of the reproductive ratio of COVID-19. Int Health. 2021;13(6):514\u20139. https:\/\/doi.org\/10.1093\/inthealth\/ihab006.","journal-title":"Int Health"},{"issue":"3","key":"5310_CR3","doi-asserted-by":"publisher","first-page":"732","DOI":"10.1093\/ije\/dyab022","volume":"50","author":"KB Ribeiro","year":"2021","unstructured":"Ribeiro KB, Ribeiro AF, Veras MASM, de Castro MC. Social inequalities and COVID-19 mortality in the city of S\u00e3o Paulo, Brazil. Int J Epidemiol. 2021;50(3):732\u201342. https:\/\/doi.org\/10.1093\/ije\/dyab022.","journal-title":"Int J Epidemiol"},{"issue":"1","key":"5310_CR4","doi-asserted-by":"publisher","first-page":"303","DOI":"10.1152\/physrev.00024.2020","volume":"101","author":"EAN Wastnedge","year":"2021","unstructured":"Wastnedge EAN, Reynolds RM, van Boeckel SR, Stock SJ, Denison FC, Maybin JA, et al. Pregnancy and COVID-19. Physiol Rev. 2021;101(1):303\u201318. https:\/\/doi.org\/10.1152\/physrev.00024.2020.","journal-title":"Physiol Rev"},{"issue":"1","key":"5310_CR5","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1186\/s12978-021-01070-6","volume":"18","author":"B Kotlar","year":"2021","unstructured":"Kotlar B, Gerson E, Petrillo S, Langer A, Tiemeier H. The impact of the COVID-19 pandemic on maternal and perinatal health: a scoping review. Reprod Health. 2021;18(1):1\u201339. https:\/\/doi.org\/10.1186\/s12978-021-01070-6.","journal-title":"Reprod Health"},{"issue":"6","key":"5310_CR6","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0234187","volume":"15","author":"V Smith","year":"2020","unstructured":"Smith V, Seo D, Warty R, Payne O, Salih M, Chin KL, et al. Maternal and neonatal outcomes associated with COVID-19 infection: a systematic review. PLoS One. 2020;15(6):e0234187. https:\/\/doi.org\/10.1371\/journal.pone.0234187.","journal-title":"PLoS One"},{"issue":"5","key":"5310_CR7","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1002\/rmv.2208","volume":"31","author":"M Jafari","year":"2021","unstructured":"Jafari M, Pormohammad A, Sheikh Neshin SA, Ghorbani S, Bose D, Alimohammadi S, et al. Clinical characteristics and outcomes of pregnant women with COVID-19 and comparison with control patients: a systematic review and meta-analysis. Rev Med Virol. 2021;31(5):1\u201316. https:\/\/doi.org\/10.1002\/rmv.2208.","journal-title":"Rev Med Virol"},{"key":"5310_CR8","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.m3320","volume":"370","author":"J Allotey","year":"2020","unstructured":"Allotey J, Stallings E, Bonet M, Yap M, Chatterjee S, Kew T, et al. Clinical manifestations, risk factors, and maternal and perinatal outcomes of coronavirus disease 2019 in pregnancy: living systematic review and meta-analysis. BMJ. 2020;370:m3320. https:\/\/doi.org\/10.1136\/bmj.m3320.","journal-title":"BMJ."},{"issue":"2","key":"5310_CR9","doi-asserted-by":"publisher","first-page":"360","DOI":"10.3390\/jcm10020360","volume":"10","author":"Y Cu\u00f1arro-L\u00f3pez","year":"2021","unstructured":"Cu\u00f1arro-L\u00f3pez Y, Pintado-Recarte P, Cueto-Hern\u00e1ndez I, Hern\u00e1ndez-Mart\u00edn C, Pay\u00e1-Mart\u00ednez MP, Mu\u00f1\u00f3z-Ch\u00e1puli MDM, et al. The profile of the obstetric patients with SARS-CoV-2 infection according to country of origin of the publication: a systematic review of the literature. J Clin Med. 2021;10(2):360. https:\/\/doi.org\/10.3390\/jcm10020360.","journal-title":"J Clin Med"},{"key":"5310_CR10","doi-asserted-by":"publisher","first-page":"135","DOI":"10.1016\/j.ejogrb.2021.12.002","volume":"268","author":"EM Young","year":"2022","unstructured":"Young EM, Green O, Stewart J, King Y, O'Donoghue K, Walker KF, et al. COVID-19 and pregnancy: a comparison of case reports, case series and registry studies. Eur J Obstet Gynecol Reprod Biol. 2022;268:135\u201342. https:\/\/doi.org\/10.1016\/j.ejogrb.2021.12.002.","journal-title":"Eur J Obstet Gynecol Reprod Biol"},{"issue":"2","key":"5310_CR11","doi-asserted-by":"publisher","first-page":"25","DOI":"10.1016\/j.ajogmf.2020.100107","volume":"2","author":"D Mascio","year":"2020","unstructured":"Mascio D, Khalil A, Saccone G, Rizzo G, Buca D, Liberati M, et al. Outcome of coronavirus spectrum infections (SARS, MERS, COVID-19) during pregnancy: a systematic review and meta-analysis. Am J Obstet Gynecol MFM. 2020;2(2):25. https:\/\/doi.org\/10.1016\/j.ajogmf.2020.100107.","journal-title":"Am J Obstet Gynecol MFM"},{"key":"5310_CR12","doi-asserted-by":"publisher","unstructured":"Takemoto MLS, Nakamura-Pereira M, Menezes MO, Katz L, Knobel R, Amorim MMR, et al. Higher case fatality rate among obstetric patients with COVID-19 in the second year of pandemic in Brazil: do new genetic variants play a role? medRxiv. 2021; 2021.05.06.21256651. https:\/\/doi.org\/10.1101\/2021.05.06.21256651.","DOI":"10.1101\/2021.05.06.21256651"},{"issue":"1","key":"5310_CR13","doi-asserted-by":"publisher","first-page":"754","DOI":"10.1186\/s12884-020-03461-2","volume":"20","author":"A Ayed","year":"2020","unstructured":"Ayed A, Embaireeg A, Benawadh A, Al-Fouzan W, Hammoud M, Al-Hathal M, et al. Maternal and perinatal characteristics and outcomes of pregnancies complicated with COVID-19 in Kuwait. BMC Pregnancy Childbirth. 2020;20(1):754. https:\/\/doi.org\/10.1186\/s12884-020-03461-2.","journal-title":"BMC Pregnancy Childbirth"},{"issue":"320","key":"5310_CR14","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1038\/s41467-021-27745-z","volume":"13","author":"V Garcia-Flores","year":"2022","unstructured":"Garcia-Flores V, Romero R, Xu Y, Theis K, Arenas-Hernandez M, Miller D, et al. Maternal-fetal immune responses in pregnant women infected with SARS-CoV-2. Nat Commun. 2022;13(320):1\u201320. https:\/\/doi.org\/10.1038\/s41467-021-27745-z.","journal-title":"Nat Commun"},{"issue":"3","key":"5310_CR15","doi-asserted-by":"publisher","first-page":"475","DOI":"10.1002\/ijgo.13804","volume":"155","author":"CA Scheler","year":"2021","unstructured":"Scheler CA, Discacciati MG, Vale DB, Lajos GJ, Surita F, Teixeira JC. Mortality in pregnancy and the postpartum period in women with severe acute respiratory distress syndrome related to COVID-19 in Brazil, 2020. Int J Gynaecol Obstet. 2021;155(3):475\u201382. https:\/\/doi.org\/10.1002\/ijgo.13804.","journal-title":"Int J Gynaecol Obstet"},{"key":"5310_CR16","doi-asserted-by":"publisher","unstructured":"Takemoto MLS, Menezes MO, Andreucci CB, Knobel R, Sousa LAR, Katz L, et al. Maternal mortality and COVID-19. J Matern Fetal Neonatal Med. 2020a:1\u20137. https:\/\/doi.org\/10.1080\/14767058.2020.1786056.","DOI":"10.1080\/14767058.2020.1786056"},{"issue":"1","key":"5310_CR17","doi-asserted-by":"publisher","first-page":"154","DOI":"10.1002\/ijgo.13300","volume":"151","author":"MLS Takemoto","year":"2020","unstructured":"Takemoto MLS, Menezes MO, Andreucci CB, Nakamura-Pereira M, Amorim MMR, Katz L, et al. The tragedy of COVID-19 in Brazil: 124 maternal deaths and counting. Int J Gynaecol Obstet. 2020b;151(1):154\u20136. https:\/\/doi.org\/10.1002\/ijgo.13300.","journal-title":"Int J Gynaecol Obstet"},{"issue":"44","key":"5310_CR18","doi-asserted-by":"publisher","first-page":"1641","DOI":"10.15585\/mmwr.mm6944e3","volume":"69","author":"LD Zambrano","year":"2020","unstructured":"Zambrano LD, Ellington S, Strid P, Galang RR, Oduyebo T, Tong VT, et al. Update: characteristics of symptomatic women of reproductive age with laboratory-confirmed SARS-CoV-2 infection by pregnancy status - United States, January 22-October 3, 2020. MMWR Morb Mortal Wkly Rep. 2020;69(44):1641\u20137. https:\/\/doi.org\/10.15585\/mmwr.mm6944e3.","journal-title":"MMWR Morb Mortal Wkly Rep"},{"issue":"1","key":"5310_CR19","doi-asserted-by":"publisher","first-page":"15","DOI":"10.1007\/s10995-020-03044-9","volume":"25","author":"JP Kingsley","year":"2021","unstructured":"Kingsley JP, Vijay PK, Kumaresan J, Sathiakumar N. The changing aspects of motherhood in face of the COVID-19 pandemic in low- and middle-income countries. Matern Child Health J. 2021;25(1):15\u201321. https:\/\/doi.org\/10.1007\/s10995-020-03044-9.","journal-title":"Matern Child Health J"},{"issue":"5","key":"5310_CR20","doi-asserted-by":"publisher","first-page":"415","DOI":"10.1016\/j.ajog.2020.02.017","volume":"222","author":"SA Rasmussen","year":"2020","unstructured":"Rasmussen SA, Smulian JC, Lednicky JA, Wen TS, Jamieson DJ. Coronavirus disease 2019 (COVID-19) and pregnancy: what obstetricians need to know. Am J Obstet Gynecol. 2020;222(5):415\u201326. https:\/\/doi.org\/10.1016\/j.ajog.2020.02.017.","journal-title":"Am J Obstet Gynecol"},{"issue":"12","key":"5310_CR21","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0208563","volume":"13","author":"K Aoyama","year":"2018","unstructured":"Aoyama K, D'Souza R, Pinto R, Ray JG, Hill A, Scales DC, et al. Risk prediction models for maternal mortality: a systematic review and meta-analysis. PLoS One. 2018;13(12):e0208563. https:\/\/doi.org\/10.1371\/journal.pone.0208563.","journal-title":"PLoS One"},{"issue":"9","key":"5310_CR22","doi-asserted-by":"publisher","first-page":"1877","DOI":"10.3390\/v13091877","volume":"13","author":"SS Musa","year":"2021","unstructured":"Musa SS, Bello UM, Zhao S, Abdullahi ZU, Lawan MA, He D. Vertical transmission of SARS-CoV-2: a systematic review of systematic reviews. Viruses. 2021;13(9):1877. https:\/\/doi.org\/10.3390\/v13091877.","journal-title":"Viruses."},{"issue":"2","key":"5310_CR23","doi-asserted-by":"publisher","first-page":"252","DOI":"10.1097\/AOG.0000000000003979","volume":"136","author":"VM Savasi","year":"2020","unstructured":"Savasi VM, Parisi F, Patan\u00e8 L, Ferrazzi E, Frigerio L, Pellegrino A, et al. Clinical findings and disease severity in hospitalized pregnant women with coronavirus disease 2019 (COVID-19). Obstet Gynecol. 2020;136(2):252\u20138. https:\/\/doi.org\/10.1097\/AOG.0000000000003979.","journal-title":"Obstet Gynecol"},{"key":"5310_CR24","doi-asserted-by":"publisher","first-page":"300","DOI":"10.1016\/j.ijid.2021.01.019","volume":"107","author":"MS Marcolino","year":"2021","unstructured":"Marcolino MS, Ziegelmann PK, Souza-Silva MVR, do Nascimento IJB, Oliveira LM, Monteiro LS, et al. Clinical characteristics and outcomes of patients hospitalized with COVID-19 in Brazil: results from the Brazilian COVID-19 registry. Int J Infect Dis. 2021a;107:300\u201310. https:\/\/doi.org\/10.1016\/j.ijid.2021.01.019.","journal-title":"Int J Infect Dis"},{"issue":"7624","key":"5310_CR25","doi-asserted-by":"publisher","first-page":"806","DOI":"10.1136\/bmj.39335.541782.AD","volume":"335","author":"E von Elm","year":"2007","unstructured":"von Elm E, Altman DG, Egger M, Pocock SJ, Gotzsche PC, Vandenbroucke JP, et al. Strengthening the reporting of observational studies in epidemiology (STROBE) statement: guidelines for reporting observational studies. BMJ. 2007;335(7624):806\u20138. https:\/\/doi.org\/10.1136\/bmj.39335.541782.AD.","journal-title":"BMJ."},{"key":"5310_CR26","unstructured":"BRASIL. Minist\u00e9rio da Sa\u00fade. Protocolo De Manejo Cl\u00ednico Do Coronav\u00edrus (Covid-19) Na Aten\u00e7\u00e3o Prim\u00e1ria \u00c0 Sa\u00fade. Bras\u00edlia: Minist\u00e9rio da Sa\u00fade; 2020a. https:\/\/saude.rs.gov.br\/upload\/arquivos\/202004\/14140606-4-ms-protocolomanejo-aps-ver07abril.pdf."},{"key":"5310_CR27","unstructured":"BRASIL. Minist\u00e9rio da Sa\u00fade. Portaria n\u00ba 467, de 20 de mar\u00e7o de 2020. Bras\u00edlia: Minist\u00e9rio da Sa\u00fade; 2020b. https:\/\/www.planalto.gov.br\/ccivil_03\/portaria\/prt\/portaria%20n%C2%BA%20467-20-ms.htm."},{"issue":"2","key":"5310_CR28","doi-asserted-by":"publisher","first-page":"377","DOI":"10.1016\/j.jbi.2008.08.010","volume":"42","author":"PA Harris","year":"2009","unstructured":"Harris PA, Taylor R, Thielke R, Payne J, Gonzalez N, Conde JG. Research electronic data capture (REDCap)--a metadata-driven methodology and workflow process for providing translational research informatics support. J Biomed Inform. 2009;42(2):377\u201381. https:\/\/doi.org\/10.1016\/j.jbi.2008.08.010.","journal-title":"J Biomed Inform"},{"issue":"103208","key":"5310_CR29","doi-asserted-by":"publisher","first-page":"9","DOI":"10.1016\/j.jbi.2019.103208","volume":"95","author":"PA Harris","year":"2019","unstructured":"Harris PA, Taylor R, Minor BL, Elliott V, Fernandez M, O'Neal L, et al. The REDCap consortium: building an international community of software platform partners. J Biomed Inform. 2019;95(103208):9. https:\/\/doi.org\/10.1016\/j.jbi.2019.103208.","journal-title":"J Biomed Inform"},{"key":"5310_CR30","doi-asserted-by":"publisher","first-page":"281","DOI":"10.1016\/j.ijid.2021.07.049","volume":"110","author":"MS Marcolino","year":"2021","unstructured":"Marcolino MS, Pires MC, Ramos LEF, Silva RT, Oliveira LM, Carvalho RLR, et al. ABC2-SPH risk score for in-hospital mortality in COVID-19 patients: development, external validation and comparison with other available scores. Int J Infect Dis. 2021b;110:281\u2013308. https:\/\/doi.org\/10.1016\/j.ijid.2021.07.049.","journal-title":"Int J Infect Dis"},{"issue":"1","key":"5310_CR31","doi-asserted-by":"publisher","first-page":"W1","DOI":"10.7326\/M14-0698","volume":"162","author":"KG Moons","year":"2015","unstructured":"Moons KG, Altman DG, Reitsma JB, Ioannidis JP, Macaskill P, Steyerberg EW, et al. Transparent reporting of a multivariable prediction model for individual prognosis or diagnosis (TRIPOD): explanation and elaboration. Ann Intern Med. 2015;162(1):W1\u201373. https:\/\/doi.org\/10.7326\/M14-0698.","journal-title":"Ann Intern Med"},{"issue":"8","key":"5310_CR32","doi-asserted-by":"publisher","first-page":"938","DOI":"10.1016\/j.jclinepi.2009.11.009","volume":"63","author":"K Rufibach","year":"2010","unstructured":"Rufibach K. Use of brier score to assess binary predictions. J Clin Epidemiol. 2010;63(8):938\u20139. https:\/\/doi.org\/10.1016\/j.jclinepi.2009.11.009.","journal-title":"J Clin Epidemiol"},{"key":"5310_CR33","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.m3339","volume":"370","author":"SR Knight","year":"2020","unstructured":"Knight SR, Ho A, Pius R, et al. Risk stratification of patients admitted to hospital with covid-19 using the ISARIC WHO clinical characterisation protocol: devel- opment and validation of the 4C mortality score. BMJ. 2020;370:m3339.","journal-title":"BMJ"},{"key":"5310_CR34","doi-asserted-by":"publisher","first-page":"22911","DOI":"10.1038\/srep22911","volume":"6","author":"JL Liu","year":"2016","unstructured":"Liu JL, Xu F, Zhou H, et al. Expanded CURB-65: a new score system predicts severity of community-acquired pneumonia with superior efficiency. Sci Rep. 2016;6:22911.","journal-title":"Sci Rep"},{"issue":"7","key":"5310_CR35","doi-asserted-by":"publisher","first-page":"419","DOI":"10.2169\/internalmedicine.45.1691","volume":"45","author":"N Miyashita","year":"2006","unstructured":"Miyashita N, Matsushima T, Oka M, Japanese Respiratory Society. The JRS guidelines for the management of community-acquired pneumonia in adults: an update and new recommendations. Intern Med. 2006;45(7):419\u201328.","journal-title":"Intern Med"},{"key":"5310_CR36","unstructured":"National Health Service (NHS) England. Resources to support the safe adoption of the revised National Early Warning Score (NEWS2). www.england.nhs.uk\/wp-content\/uploads\/2019\/12\/Patient_Safety_Alert_-_adoption_of_NEWS2.pdf Date last updated: 25 April 2018; date last Accessed: 2 Apr 2020."},{"key":"5310_CR37","volume-title":"Protocolo cl\u00ednico-centro estadual de dissemina\u00e7\u00e3o de evid\u00eancias em sa\u00fade da Covid-19: National Early Warning Score (NEWS) para COVID-19 modificado\/simplificado (NEWS-FAST-COVID) para ambiente Pr\u00e9-Hospitalar \/ USF","author":"GAA Medeiros","year":"2020","unstructured":"Medeiros GAA, N\u00f3brega RV, Beltrammi D, Gottardo PC, Correia LGCB. Protocolo cl\u00ednico-centro estadual de dissemina\u00e7\u00e3o de evid\u00eancias em sa\u00fade da Covid-19: National Early Warning Score (NEWS) para COVID-19 modificado\/simplificado (NEWS-FAST-COVID) para ambiente Pr\u00e9-Hospitalar \/ USF. Brasil: Secretaria de Estado de Sa\u00fade; 2020."},{"issue":"1","key":"5310_CR38","doi-asserted-by":"publisher","first-page":"18638","DOI":"10.1038\/s41598-021-97332-1","volume":"11","author":"A Jones","year":"2021","unstructured":"Jones A, Pitre T, Junek M, Kapralik J, Patel R, Feng E, et al. External validation of the 4C mortality score among COVID-19 patients admitted to hospital in Ontario, Canada: a retrospective study. Sci Rep. 2021;11(1):18638. https:\/\/doi.org\/10.1038\/s41598-021-97332-1.","journal-title":"Sci Rep"},{"issue":"3","key":"5310_CR39","doi-asserted-by":"publisher","first-page":"1","DOI":"10.3390\/diagnostics12030703","volume":"12","author":"C Citu","year":"2022","unstructured":"Citu C, Gorun F, Motoc A, Ratiu A, Gorun OM, Burlea B, et al. Evaluation and comparison of the predictive value of 4C mortality score, NEWS, and CURB-65 in poor outcomes in COVID-19 patients: a retrospective study from a single Center in Romania. Diagnostics. 2022;12(3):1\u201310. https:\/\/doi.org\/10.3390\/diagnostics12030703.","journal-title":"Diagnostics"},{"key":"5310_CR40","doi-asserted-by":"publisher","DOI":"10.1016\/j.amsu.2022.103462","volume":"76","author":"E Wibisono","year":"2022","unstructured":"Wibisono E, Hadi U, Bramantono AMV, Rusli M, Rahman BE, et al. National early warning score (NEWS) 2 predicts hospital mortality from COVID-19 patients. Ann Med Surg (Lond). 2022;76:103462. https:\/\/doi.org\/10.1016\/j.amsu.2022.103462.","journal-title":"Ann Med Surg (Lond)"},{"issue":"5","key":"5310_CR41","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1371\/journal.pmed.1001221","volume":"9","author":"W Bouwmeester","year":"2012","unstructured":"Bouwmeester W, Zuithoff NP, Mallett S, Geerlings MI, Vergouwe Y, Steyerberg EW, et al. Reporting and methods in clinical prediction research: a systematic review. PLoS Med. 2012;9(5):1\u201312. https:\/\/doi.org\/10.1371\/journal.pmed.1001221.","journal-title":"PLoS Med"},{"key":"5310_CR42","doi-asserted-by":"publisher","first-page":"12","DOI":"10.1016\/j.jclinepi.2019.02.004","volume":"110","author":"E Christodoulou","year":"2019","unstructured":"Christodoulou E, Ma J, Collins GS, Steyerberg EW, Verbakel JY, Van Calster B. A systematic review shows no performance benefit of machine learning over logistic regression for clinical prediction models. J Clin Epidemiol. 2019;110:12\u201322. https:\/\/doi.org\/10.1016\/j.jclinepi.2019.02.004.","journal-title":"J Clin Epidemiol"},{"issue":"40","key":"5310_CR43","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1186\/1471-2288-14-40","volume":"14","author":"GS Collins","year":"2014","unstructured":"Collins GS, de Groot JA, Dutton S, Omar O, Shanyinde M, Tajar A, et al. External validation of multivariable prediction models: a systematic review of methodological conduct and reporting. BMC Med Res Methodol. 2014;14(40):1\u201311. https:\/\/doi.org\/10.1186\/1471-2288-14-40.","journal-title":"BMC Med Res Methodol"},{"key":"5310_CR44","doi-asserted-by":"publisher","unstructured":"Paiva BBM d, Delfino-Pereira P, Andrade CMV d, Gomes VMR, Lima MCPB, Souza-Silva MVR, et al. Effectiveness, explainability and reliability of machine meta-learning methods for predicting mortality in patients with COVID-19: results of the Brazilian COVID-19 registry. medRxiv. 2021. https:\/\/doi.org\/10.1101\/2021.11.01.21265527.","DOI":"10.1101\/2021.11.01.21265527"},{"issue":"3","key":"5310_CR45","doi-asserted-by":"publisher","first-page":"403.e1","DOI":"10.1016\/j.ajog.2021.09.024","volume":"226","author":"E Kalafat","year":"2022","unstructured":"Kalafat E, Prasad S, Birol P, Tekin AB, Kunt A, Di Fabrizio C, et al. An internally validated prediction model for critical COVID-19 infection and intensive care unit admission in symptomatic pregnant women. Am J Obstet Gynecol. 2022;226(3):403.e1\u2013403.e13. https:\/\/doi.org\/10.1016\/j.ajog.2021.09.024.","journal-title":"Am J Obstet Gynecol"},{"issue":"12","key":"5310_CR46","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0261492","volume":"16","author":"BMM Gon\u00e7alves","year":"2021","unstructured":"Gon\u00e7alves BMM, Franco RPV, Rodrigues AS. Maternal mortality associated with COVID-19 in Brazil in 2020 and 2021: comparison with non-pregnant women and men. PLoS One. 2021;16(12):e0261492. https:\/\/doi.org\/10.1371\/journal.pone.0261492.","journal-title":"PLoS One"},{"key":"5310_CR47","doi-asserted-by":"publisher","first-page":"445","DOI":"10.1055\/s-0040-1715138","volume":"42","author":"M Nakamura-Pereira","year":"2020","unstructured":"Nakamura-Pereira M, Amorim MMR, Pacagnella RC, Takemoto MLS, Penso FCC, Rezende-Filho J, et al. COVID-19 and maternal death in Brazil: an invisible tragedy. Rev Bras Ginecol Obstet. 2020;42:445\u20137.","journal-title":"Rev Bras Ginecol Obstet"},{"key":"5310_CR48","doi-asserted-by":"publisher","unstructured":"Wali AA, Abd-El-Fatah SM. Prognosis and outcomes of COVID-19 infection during pregnancy. Covid-19 Infect Pregnancy. 2021:145\u201365. https:\/\/doi.org\/10.1016\/B978-0-323-90595-4.00003-0.","DOI":"10.1016\/B978-0-323-90595-4.00003-0"},{"key":"5310_CR49","doi-asserted-by":"publisher","unstructured":"Maza-Arnedo F, Paternina-Caicedo A, Sosa CG, Mucio B, Rojas-Suarez J, Say L, et al. Maternal mortality linked to COVID-19 in Latin America: results from a multicountry collaborative database of 447 deaths. Preprints with Lancet Specialties. 2022. https:\/\/doi.org\/10.2139\/ssrn.4035411.","DOI":"10.2139\/ssrn.4035411"},{"issue":"25","key":"5310_CR50","doi-asserted-by":"publisher","first-page":"769","DOI":"10.15585\/mmwr.mm6925a1","volume":"69","author":"S Ellington","year":"2020","unstructured":"Ellington S, Strid P, Tong VT, Woodworth K, Galang RR, Zambrano LD, et al. Characteristics of women of reproductive age with laboratory-confirmed SARS-CoV-2 infection by pregnancy status - United States, January 22-June 7, 2020. MMWR Morb Mortal Wkly Rep. 2020;69(25):769\u201375. https:\/\/doi.org\/10.15585\/mmwr.mm6925a1.","journal-title":"MMWR Morb Mortal Wkly Rep"},{"issue":"3","key":"5310_CR51","doi-asserted-by":"publisher","first-page":"653","DOI":"10.1097\/AOG.0000000000003721","volume":"135","author":"LJ Green","year":"2020","unstructured":"Green LJ, Mackillop LH, Salvi D, Pullon R, Loerup L, Tarassenko L, et al. Gestation-specific vital sign reference ranges in pregnancy. Obstet Gynecol. 2020;135(3):653\u201364. https:\/\/doi.org\/10.1097\/AOG.0000000000003721.","journal-title":"Obstet Gynecol"},{"issue":"2","key":"5310_CR52","doi-asserted-by":"publisher","first-page":"89","DOI":"10.5830\/CVJA-2016-021","volume":"27","author":"P Soma-Pillay","year":"2016","unstructured":"Soma-Pillay P, Nelson-Piercy C, Tolppanen H, Mebazaa A. Physiological changes in pregnancy. Cardiovasc J Afr. 2016;27(2):89\u201394. https:\/\/doi.org\/10.5830\/CVJA-2016-021.","journal-title":"Cardiovasc J Afr"},{"issue":"23","key":"5310_CR53","doi-asserted-by":"publisher","first-page":"2211","DOI":"10.1056\/NEJMra1213566","volume":"370","author":"AP Kourtis","year":"2014","unstructured":"Kourtis AP, Read JS, Jamieson DJ. Pregnancy and infection. N Engl J Med. 2014;370(23):2211\u20138. https:\/\/doi.org\/10.1056\/NEJMra1213566.","journal-title":"N Engl J Med"},{"issue":"5","key":"5310_CR54","doi-asserted-by":"publisher","DOI":"10.1111\/aji.13317","volume":"84","author":"N Hanna","year":"2020","unstructured":"Hanna N, Hanna M, Sharma S. Is pregnancy an immunological contributor to severe or controlled COVID-19 disease? Am J Reprod Immunol. 2020;84(5):e13317. https:\/\/doi.org\/10.1111\/aji.13317.","journal-title":"Am J Reprod Immunol"},{"issue":"10","key":"5310_CR55","doi-asserted-by":"publisher","first-page":"1768","DOI":"10.1093\/cid\/ciab104","volume":"73","author":"F Crovetto","year":"2021","unstructured":"Crovetto F, Crispi F, Llurba E, Pascal R, Larroya M, Trilla C, et al. Impact of SARS-CoV-2 infection on pregnancy outcomes: a population-based study. Clin Infect Dis. 2021;73(10):1768\u201375. https:\/\/doi.org\/10.1093\/cid\/ciab104.","journal-title":"Clin Infect Dis"},{"issue":"8","key":"5310_CR56","doi-asserted-by":"publisher","first-page":"469","DOI":"10.1038\/nri.2017.64","volume":"17","author":"G Mor","year":"2017","unstructured":"Mor G, Aldo P, Alvero AB. The unique immunological and microbial aspects of pregnancy. Nat Rev Immunol. 2017;17(8):469\u201382. https:\/\/doi.org\/10.1038\/nri.2017.64.","journal-title":"Nat Rev Immunol"},{"key":"5310_CR57","doi-asserted-by":"publisher","first-page":"45","DOI":"10.1016\/j.placenta.2020.07.022","volume":"99","author":"S Komine-Aizawa","year":"2020","unstructured":"Komine-Aizawa S, Takada K, Hayakawa S. Placental barrier against COVID-19. Placenta. 2020;99:45\u20139. https:\/\/doi.org\/10.1016\/j.placenta.2020.07.022.","journal-title":"Placenta."},{"issue":"1","key":"5310_CR58","doi-asserted-by":"publisher","DOI":"10.1590\/1678-4685-GMB-2020-0224","volume":"44","author":"FSL Vianna","year":"2021","unstructured":"Vianna FSL, Fraga LR, Abeche AM, Silva AAD, Sanseverino MTV, Schuler-Faccini L. COVID-19 during pregnancy and adverse outcomes: concerns and recommendations from the Brazilian teratology information service. Gen Molec Biol. 2021;44(1):e20200224. https:\/\/doi.org\/10.1590\/1678-4685-GMB-2020-0224.","journal-title":"Gen Molec Biol"},{"issue":"1","key":"5310_CR59","doi-asserted-by":"publisher","first-page":"23","DOI":"10.1093\/ajcp\/aqaa089","volume":"154","author":"ED Shanes","year":"2020","unstructured":"Shanes ED, Mithal LB, Otero S, Azad HA, Miller ES, Goldstein JA. Placental pathology in COVID-19. Am J Clin Pathol. 2020;154(1):23\u201332. https:\/\/doi.org\/10.1093\/ajcp\/aqaa089.","journal-title":"Am J Clin Pathol"},{"issue":"3","key":"5310_CR60","doi-asserted-by":"publisher","first-page":"177","DOI":"10.1177\/1093526620925569","volume":"23","author":"RN Baergen","year":"2020","unstructured":"Baergen RN, Heller DS. Placental pathology in Covid-19 positive mothers: preliminary findings. Pediatr Dev Pathol. 2020;23(3):177\u201380. https:\/\/doi.org\/10.1177\/1093526620925569.","journal-title":"Pediatr Dev Pathol"},{"issue":"5","key":"5310_CR61","doi-asserted-by":"publisher","first-page":"640","DOI":"10.1111\/ajo.13204","volume":"60","author":"E Pettirosso","year":"2020","unstructured":"Pettirosso E, Giles M, Cole S, Rees M. COVID-19 and pregnancy: a review of clinical characteristics, obstetric outcomes and vertical transmission. Aust N Z J Obstet Gynaecol. 2020;60(5):640\u201359. https:\/\/doi.org\/10.1111\/ajo.13204.","journal-title":"Aust N Z J Obstet Gynaecol"},{"issue":"1","key":"5310_CR62","doi-asserted-by":"publisher","first-page":"7","DOI":"10.1002\/ijgo","volume":"151","author":"O Turan","year":"2020","unstructured":"Turan O, Hakim A, Dashraath P, Jeslyn WJL, Wright A, Abdul-Kadir R. Clinical characteristics, prognostic factors, and maternal and neonatal outcomes of SARS-CoV-2 infection among hospitalized pregnant women: a systematic review. Int J Gynaecol Obstet. 2020;151(1):7\u201316. https:\/\/doi.org\/10.1002\/ijgo.","journal-title":"Int J Gynaecol Obstet"},{"key":"5310_CR63","doi-asserted-by":"publisher","unstructured":"Sahin D, Tanacan A, Anuk AT, et al. Comparison of clinical features and perinatal outcomes between pre-variant and post-variant periods in pregnant women with SARS-CoV-2: analysis of 1935 cases [published online ahead of print, 2022 Mar 7]. Arch Gynecol Obstet. 2022:1\u201310. https:\/\/doi.org\/10.1007\/s00404-022-06493-5.","DOI":"10.1007\/s00404-022-06493-5"},{"issue":"SI-1","key":"5310_CR64","doi-asserted-by":"publisher","first-page":"3312","DOI":"10.3906\/sag-2106-134","volume":"51","author":"D \u015eahin","year":"2021","unstructured":"\u015eahin D, Tana\u00e7an A, Webster SN, Moralo\u011flu T\u00d6. Pregnancy and COVID-19: prevention, vaccination, therapy, and beyond. Turk. J Med Sci. 2021;51(SI-1):3312\u201326. https:\/\/doi.org\/10.3906\/sag-2106-134.","journal-title":"J Med Sci"}],"container-title":["BMC Pregnancy and Childbirth"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12884-022-05310-w.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s12884-022-05310-w\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12884-022-05310-w.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,1,29]],"date-time":"2023-01-29T23:43:36Z","timestamp":1675035816000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmcpregnancychildbirth.biomedcentral.com\/articles\/10.1186\/s12884-022-05310-w"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,1,10]]},"references-count":64,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2023,12]]}},"alternative-id":["5310"],"URL":"https:\/\/doi.org\/10.1186\/s12884-022-05310-w","relation":{"has-preprint":[{"id-type":"doi","id":"10.21203\/rs.3.rs-956336\/v2","asserted-by":"object"},{"id-type":"doi","id":"10.21203\/rs.3.rs-956336\/v1","asserted-by":"object"}]},"ISSN":["1471-2393"],"issn-type":[{"value":"1471-2393","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,1,10]]},"assertion":[{"value":"2 November 2021","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"14 December 2022","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"10 January 2023","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"30 January 2023","order":4,"name":"change_date","label":"Change Date","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"Update","order":5,"name":"change_type","label":"Change Type","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"In order for author names to appear in the Pubmed indexing, only last names were captured as FamilyName.","order":6,"name":"change_details","label":"Change Details","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The study protocol was approved by the Brazilian National Commission for Research Ethics (CAAE 30350820.5.1001.0008). Individual informed consent was waived due to the severity of the situation and the use of unidentified data, based on medical chart review only. Additionally, administrative permissions to access and use the medical records were obtained from each institution.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare that they have no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"18"}}