{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,18]],"date-time":"2025-10-18T20:53:41Z","timestamp":1760820821099},"reference-count":18,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2016,10,19]],"date-time":"2016-10-19T00:00:00Z","timestamp":1476835200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Obstet Gynecol Scand"],"published-print":{"date-parts":[[2016,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Knowledge about global use patterns of contraceptive implants is limited. This study aims to describe implant use patterns from a user and a prescriber perspective.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and methods<\/jats:title><jats:p>In a cross\u2010sectional design, we estimated the annual number of users by calculating doses sold per 1000 women\u2010years in the Norwegian Prescription Database for 2006\u20132012. For each contraceptive method, we calculated on an annual basis a proportion of defined daily doses of all hormonal contraceptives in five\u2010year age groups. Data were analyzed in <jats:styled-content style=\"fixed-case\">SPSS<\/jats:styled-content> version 22, using chi\u2010square test, <jats:italic>t<\/jats:italic>\u2010test, and survival analysis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Sales from pharmacies for contraceptive implants more than doubled over the study years and were consistently higher in the younger age groups. The collection rate was 9.3 per 1000 women in 2012, when implant sales amounted to 2.4% of all daily doses of hormonal contraceptives sold. General practitioners and doctors with no specialty were the major prescribers to those starting to use contraceptive implants (starters), whereas gynecologists prescribed nearly 12% of the volume, with a higher proportion to women &gt;35\u00a0years of age than younger women. The cumulative proportions of continued users at 6, 12, 24, and 36\u00a0months were 96.1, 78.6, 51.9, and 34.9%, respectively, significantly lower for users who had prescribing doctors with no specialty. At end of the first expiration period, 21% of starters continued using\u00a0implants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Implants play a minor role in the overall use of hormonal contraception in Norway. One in five starters continue as long\u2010term users.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aogs.13002","type":"journal-article","created":{"date-parts":[[2016,8,19]],"date-time":"2016-08-19T07:42:48Z","timestamp":1471592568000},"page":"1244-1250","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Use pattern for contraceptive implants in Norway"],"prefix":"10.1111","volume":"95","author":[{"given":"Vigdis","family":"\u00d8vre\u2010Eide","sequence":"first","affiliation":[{"name":"Research Group Epidemiology of Chronic Diseases Department of Community Medicine Faculty of Health Sciences UiT The Arctic University of Norway Troms\u00f8 Norway"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Finn Egil","family":"Skjeldestad","sequence":"additional","affiliation":[{"name":"Research Group Epidemiology of Chronic Diseases Department of Community Medicine Faculty of Health Sciences UiT The Arctic University of Norway Troms\u00f8 Norway"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2016,10,19]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1080\/13625180410001696223"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijgo.2005.06.007"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.contraception.2009.04.003"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.3109\/13625187.2011.636088"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1080\/13625180801942754"},{"key":"e_1_2_8_7_1","first-page":"CD001326","article-title":"Subdermal implantable contraceptives versus other forms of reversible contraceptives or other implants as effective methods for preventing pregnancy","volume":"3","author":"Power J","year":"2008","journal-title":"Cochrane Database Syst Rev"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.contraception.2010.09.012"},{"key":"e_1_2_8_9_1","unstructured":"World Contraceptive Patterns 2013. United Nations. Department of Economic and Social Affairs. Population Division. Available online at:http:\/\/www.un.org\/en\/development\/desa\/population\/publications\/pdf\/family\/worldContraceptivePatternsWallChart2013.pdf(accessed October 30 2015)."},{"key":"e_1_2_8_10_1","first-page":"292","article-title":"Prescribing contraception for young women","volume":"132","author":"Skjeldestad FE","year":"2012","journal-title":"J Norw Med Assoc"},{"key":"e_1_2_8_11_1","first-page":"2803","article-title":"Use of contraceptives in Norway in 2005","volume":"127","author":"Skjeldestad FE","year":"2007","journal-title":"J Norw Med Assoc"},{"key":"e_1_2_8_12_1","unstructured":"Table\u00a007459. Population. Statistics Norway. Available online at:https:\/\/www.ssb.no\/statistikkbanken\/selecttable\/hovedtabellHjem.asp?KortNavnWeb=folkemengde&CMSSubjectArea=befolkning&PLanguage=1&checked=true(accessed January 4 2016)."},{"key":"e_1_2_8_13_1","unstructured":"DanielsK DaughertyJ JonesJ.Current contraceptive status amonge women aged 15\u201344: United States 2011\u20132013. NCHS Data Brief. No. 173. December 2014. U.S. Department of Health and Human Services Centers for Disease Control and Prevention National Center for Health Statistics. Available online at:http:\/\/www.cdc.gov\/nchs\/data\/databriefs\/db173.pdf(accessed June 11 2015)."},{"key":"e_1_2_8_14_1","unstructured":"NHS Contraceptive Services: England Community Contraceptive Clinics.Statistics for 2013\u201314. NHS Contraceptive Services England 2013\u201314.National Statistics. 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Available online atHttps:\/\/helsedirektoratet.no\/folkehelse\/seksuell-helse\/langtidsvirkende-reversibel-prevensjon-larc(accessed November 11 2015)."},{"key":"e_1_2_8_18_1","unstructured":"Forebygging av u\u00f8nsket svangerskap og abort 2010\u20102015 \u2013 strategier for bedre seksuell helse. Rapport IS\u20101813. [Prevention of unwanted pregnancies and abortions from 2010 to 2015 \u2013 Strategies for better sexual health. Report IS\u20101813]. Helsedirektoratet (Health Directorate). 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