{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T10:44:52Z","timestamp":1783334692040,"version":"3.54.6"},"reference-count":25,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2024,2,8]],"date-time":"2024-02-08T00:00:00Z","timestamp":1707350400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001807","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de S\u00e3o Paulo","doi-asserted-by":"publisher","award":["573747\/2008\u20103"],"award-info":[{"award-number":["573747\/2008\u20103"]}],"id":[{"id":"10.13039\/501100001807","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":["2015\/20504\u20109"],"award-info":[{"award-number":["2015\/20504\u20109"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intl J Gynecology &amp; Obste"],"published-print":{"date-parts":[[2024,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>To compare the efficacy, reasons for discontinuation and continuation rates of the etonogestrel (ENG)\u2010subdermal contraceptive implant when offered at no cost, and the basis of free choice versus short\u2010acting reversible contraceptive (SARC) methods including combined oral contraceptives (COCs), once\u2010a\u2010month injectables, vaginal ring, and patch.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We conducted a prospective study at the University of Campinas, Brazil, involving women aged 18 to 40\u2009years. They were counseled on various contraceptive methods before entering the study and followed up every 3\u2009months for up to 24\u2009months. Satisfaction was assessed using a Likert scale. Survival rates were estimated using the Kaplan\u2013Meier test, and curve comparisons were performed using the log\u2010rank test.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>We enrolled 609 women including 358\/609 women (58.8%) who chose the ENG\u2010implant and 251\/609 (41.2%) who chose SARC methods. Contraceptive failure and all other reasons for discontinuation were significantly higher in SARC users compared to the ENG\u2010implant users (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.001 and <jats:italic>P<\/jats:italic>\u2009=\u20090.002, respectively). The continuation rate was higher among ENG\u2010implant users (89.9% and 75.4%) compared to SARC methods users (27.2% and 15.9%) up to 1 and 2\u2009years after study initiation, respectively. Satisfaction was high in both groups (&gt;82%).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The ENG\u2010implant showed higher contraceptive effectiveness and higher continuation rates than SARC methods up to 2\u2009years after study initiation. Furthermore, users from both groups were highly satisfied with their contraceptive. The main reason for discontinuing use of the ENG\u2010implant was bothersome uterine bleeding, while for SARC methods it was for personal reasons.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ijgo.15415","type":"journal-article","created":{"date-parts":[[2024,2,8]],"date-time":"2024-02-08T09:49:03Z","timestamp":1707385743000},"page":"305-311","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Effectiveness and continuation rates of the etonogestrel\u2010subdermal contraceptive implant versus short\u2010acting contraceptive methods offered at no cost in Campinas, Brazil"],"prefix":"10.1002","volume":"166","author":[{"given":"Montas","family":"Laporte","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, Faculty of Medical Sciences University of Campinas  Campinas S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana C.","family":"Marcelino","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Faculty of Medical Sciences University of Campinas  Campinas S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paula","family":"da Cunha\u00a0Pereira","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Faculty of Medical Sciences University of Campinas  Campinas S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ximena","family":"Espejo\u2010Arce","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Faculty of Medical Sciences University of Campinas  Campinas S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cassia T.","family":"Juliato","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Faculty of Medical Sciences University of Campinas  Campinas S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7356-8428","authenticated-orcid":false,"given":"Luis","family":"Bahamondes","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Faculty of Medical Sciences University of Campinas  Campinas S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,2,8]]},"reference":[{"key":"e_1_2_10_2_1","unstructured":"United Nations Population Fund.Family planning. 2022. Nearly half of all pregnancies are unintended\u2014a global crisis. Accessed July 08 2023.https:\/\/www.unfpa.org\/press\/nearly\u2010half\u2010all\u2010pregnancies\u2010are\u2010unintended\u2010global\u2010crisis\u2010says\u2010new\u2010unfpa\u2010report"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.contraception.2019.09.006"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.2307\/3097748"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1097\/GRF.0000000000000059"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1089\/jwh.2015.5191"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(19)31243-7"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cppeds.2018.11.002"},{"key":"e_1_2_10_9_1","volume-title":"Pesquisa Nacional de Demografia e Sa\u00fade da Crian\u00e7a e da Mulher \u2010 PNDS 2006","author":"Minist\u00e9rio da Sa\u00fade","year":"2009"},{"key":"e_1_2_10_10_1","unstructured":"Minist\u00e9rio da Sa\u00fade.CONITEC. Implante subd\u00e9rmico de etonogestrel na preven\u00e7\u00e3o da gravidez n\u00e3o planejada por mulheres adultas em idade reprodutiva entre 18 e 49 anos.2021. Accessed August 21 2023.https:\/\/www.gov.br\/conitec\/pt\u2010br\/midias\/consultas\/relatorios\/2021\/Sociedade\/20210428_resoc232_etonogestrel.pdf"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMoa1110855"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2017.01.036"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.1093\/humrep\/dev221"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1590\/1413-81232018243.10932017"},{"key":"e_1_2_10_15_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2929.2004.02012.x"},{"key":"e_1_2_10_16_1","volume-title":"The SAS System for Windows (Statistical Analysis System), version 9.4","year":"2002"},{"key":"e_1_2_10_17_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e31821188ad"},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0232582"},{"issue":"1","key":"e_1_2_10_19_1","first-page":"8","article-title":"Implanon discontinuation rate and associated factors among women who ever used Implanon in the last three years in Debre Markos Town, Northwest Ethiopia, 2016, cross sectional study","volume":"2","author":"Siyoum M","year":"2017","journal-title":"ARC J Public Health Community Med"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.contraception.2009.05.132"},{"key":"e_1_2_10_21_1","unstructured":"Bayer Brazil.Gravidez n\u00e3o planejada atinge 62% das mulheres no Brasil.2022. (Accessed August 21 2023). Available from:https:\/\/www.bayer.com.br\/pt\/blog\/gravidez\u2010nao\u2010planejada\u2010atinge\u201062\u2010mulheres\u2010brasil"},{"key":"e_1_2_10_22_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12905-021-01542-8"},{"key":"e_1_2_10_23_1","volume-title":"Medical Eligibility Criteria for Contraceptive Use. Reproductive Health and Research","author":"World Health Organization","year":"2015"},{"key":"e_1_2_10_24_1","unstructured":"International Federation of Gynecology and Obstetrics.The benefits of Long\u2010Acting Reversible Contraception. (Accessed August 21 2023).https:\/\/www.figo.org\/benefits\u2010long\u2010acting\u2010reversible\u2010contraception"},{"key":"e_1_2_10_25_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3182723b7d"},{"key":"e_1_2_10_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.contraception.2017.10.003"}],"container-title":["International Journal of Gynecology &amp; Obstetrics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ijgo.15415","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,6,23]],"date-time":"2024-06-23T07:00:16Z","timestamp":1719126016000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1002\/ijgo.15415"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,2,8]]},"references-count":25,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2024,7]]}},"alternative-id":["10.1002\/ijgo.15415"],"URL":"https:\/\/doi.org\/10.1002\/ijgo.15415","archive":["Portico"],"relation":{},"ISSN":["0020-7292","1879-3479"],"issn-type":[{"value":"0020-7292","type":"print"},{"value":"1879-3479","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,2,8]]},"assertion":[{"value":"2023-08-30","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-01-25","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-02-08","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}