{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T01:20:28Z","timestamp":1787016028018,"version":"build-2736575974"},"reference-count":38,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2020,1,20]],"date-time":"2020-01-20T00:00:00Z","timestamp":1579478400000},"content-version":"vor","delay-in-days":19,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100004423","name":"World Health Organization","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100004423","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006506","name":"Minist\u00e9rio da Sa\u00fade","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100006506","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Paediatric Perinatal Epid"],"published-print":{"date-parts":[[2020,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Optimal sleep is essential for child growth, development, and immune function. Few studies have evaluated factors associated with sleep duration in childhood from a longitudinal perspective.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>This study aimed to identify trajectories of sleep duration in childhood and associated maternal and child characteristics.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Sleep duration was assessed by maternal report at 3, 12, 24, and 48\u00a0months among children from the Pelotas (Brazil) 2004 Birth Cohort. Independent variables included family income, maternal and child demographics, and clinical characteristics. Trajectory analysis was carried out using a semi\u2010parametric, group\u2010based modelling approach. Multinomial logistic regression provided odds ratios (ORs) and 95% confidence intervals (CIs) for the associations between independent variables and sleep duration trajectory groups.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 3824 participants were included in the analyses. Three trajectories of sleep duration were identified: \u201cshort sleepers\u201d (9.1%), \u201ctypical sleepers\u201d (72.1%), and \u201cinitially longer sleepers\u201d (18.8%). When compared to typical sleepers, children from less schooled mothers (OR 1.82, 95% CI 1.26, 2.62) and those whose mothers reported depressive symptoms during pregnancy (OR 1.31, 95% CI 1.02, 1.68) and consumed alcohol beverages at 3\u00a0months post\u2010partum (OR 1.60, 95% CI 1.03, 2.50) were more likely to be short sleepers. Children who shared the bedroom with another child were about 40% (OR 1.41, 95% CI 1.07, 1.87) more likely to be short sleepers. None of the investigated maternal and child characteristics remained associated with the \u201cinitially longer sleeper\u201d group.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Among the identified trajectories, the group with short sleep duration trajectory deserves special attention given the importance of adequate sleep duration in the first years of life for the child's growth and development and the high concomitance of other risk factors, such as less schooled mothers, and mothers who reported depressive symptoms during pregnancy and consumed alcohol at 3\u00a0months post\u2010partum.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/ppe.12628","type":"journal-article","created":{"date-parts":[[2020,1,21]],"date-time":"2020-01-21T02:34:17Z","timestamp":1579574057000},"page":"60-69","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Sleep duration trajectories from age 3 to 48\u00a0months in The Pelotas (Brazil) 2004 Birth Cohort Study"],"prefix":"10.1111","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8791-3520","authenticated-orcid":false,"given":"Mariana Otero","family":"Xavier","sequence":"first","affiliation":[{"name":"Post\u2010Graduate Program in Epidemiology Federal University of Pelotas Pelotas Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Renata Moraes","family":"Bielemann","sequence":"additional","affiliation":[{"name":"Post\u2010Graduate Program in Epidemiology Federal University of Pelotas Pelotas Brazil"},{"name":"Post\u2010Graduate Program in Nutrition and Foods Federal University of Pelotas Pelotas Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marina Xavier","family":"Carpena","sequence":"additional","affiliation":[{"name":"Post\u2010Graduate Program in Epidemiology Federal University of Pelotas Pelotas Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fernando C.","family":"Barros","sequence":"additional","affiliation":[{"name":"Post\u2010Graduate Program in Epidemiology Federal University of Pelotas Pelotas Brazil"},{"name":"Post\u2010Graduate Program of Health and Behavior Catholic University of Pelotas Pelotas Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alicia","family":"Matijasevich","sequence":"additional","affiliation":[{"name":"Post\u2010Graduate Program in Epidemiology Federal University of Pelotas Pelotas Brazil"},{"name":"Department of Preventive Medicine Faculty of Medicine FMUSP University of S\u00e3o Paulo S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"In\u00e1 S.","family":"Santos","sequence":"additional","affiliation":[{"name":"Post\u2010Graduate Program in Epidemiology Federal University of Pelotas Pelotas Brazil"},{"name":"Post\u2010graduate Program in Pediatrics and Child Health Pontifical Catholic University of Rio Grande do Sul Porto Alegre Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,1,20]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0891-5245(03)00149-4"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pbiomolbio.2011.08.014"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.2174\/1874306401105010031"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.socscimed.2012.05.002"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/YCO.0000000000000109"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.smrv.2009.10.004"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.2147\/NSS.S125992"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleh.2014.12.010"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.smrv.2011.03.005"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.5665\/sleep.6170"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleep.2009.04.012"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12889-017-4850-2"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.smrv.2011.06.001"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2013-3806"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1093\/sleep\/31.11.1507"},{"key":"e_1_2_8_17_1","unstructured":"Instituto Brasileiro de Geografia e Estat\u00edstica (IBGE). [cited 2019 Sep. 18]https:\/\/cidades.ibge.gov.br\/brasil\/rs\/pelotas\/panorama. Accessed September 18 2019."},{"key":"e_1_2_8_18_1","unstructured":"Instituto Brasileiro de Geografia e Estat\u00edstica (IBGE). [cited 2019 Sep. 18]https:\/\/cidades.ibge.gov.br\/brasil\/panorama. Accessed September 18 2019."},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1093\/ije\/dyq130"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12888-016-1016-1"},{"key":"e_1_2_8_21_1","volume-title":"Indicators for Assessing Breastfeeding Practices","author":"World Health Organization","year":"1991"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.4159\/9780674041318"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1111\/1467-8624.00086"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.clinpsy.121208.131413"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1177\/0049124113503141"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1080\/00273171.2011.568786"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.2188\/jea.JE20090054"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleep.2014.01.005"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleep.2019.01.015"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.earlhumdev.2006.08.006"},{"key":"e_1_2_8_31_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.psyneuen.2015.08.024"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2004-1056"},{"key":"e_1_2_8_33_1","doi-asserted-by":"publisher","DOI":"10.1111\/acer.13803"},{"key":"e_1_2_8_34_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0741-8329(01)00175-6"},{"key":"e_1_2_8_35_1","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2004-0815B"},{"key":"e_1_2_8_36_1","doi-asserted-by":"publisher","DOI":"10.1037\/0893-3200.21.1.20"},{"key":"e_1_2_8_37_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleep.2007.07.008"},{"key":"e_1_2_8_38_1","doi-asserted-by":"publisher","DOI":"10.1001\/jamapediatrics.2018.0739"},{"key":"e_1_2_8_39_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(15)01024-7"}],"container-title":["Paediatric and Perinatal Epidemiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2Fppe.12628","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/ppe.12628","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/ppe.12628","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/ppe.12628","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,7]],"date-time":"2023-09-07T12:58:00Z","timestamp":1694091480000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/ppe.12628"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,1]]},"references-count":38,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2020,1]]}},"alternative-id":["10.1111\/ppe.12628"],"URL":"https:\/\/doi.org\/10.1111\/ppe.12628","archive":["Portico"],"relation":{},"ISSN":["0269-5022","1365-3016"],"issn-type":[{"value":"0269-5022","type":"print"},{"value":"1365-3016","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,1]]},"assertion":[{"value":"2019-05-29","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2019-11-03","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-01-20","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}