Fertility awareness-based mobile application for contraception
Objectives: The aim of the study was to retrospectively evaluate the effectiveness of a fertility awareness-based method supported by a mobile-based application to prevent unwanted pregnancies as a method of natural birth control. Methods: In a retrospective analysis, the application's efficien...
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| Veröffentlicht in: | EUROPEAN JOURNAL OF CONTRACEPTION AND REPRODUCTIVE HEALTH CARE 2016-01, Vol.21 (3), p.234-241 |
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| container_title | EUROPEAN JOURNAL OF CONTRACEPTION AND REPRODUCTIVE HEALTH CARE |
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| creator | Berglund Scherwitzl, Elina Gemzell Danielsson, Kristina Sellberg, Jonas A. Scherwitzl, Raoul |
| description | Objectives: The aim of the study was to retrospectively evaluate the effectiveness of a fertility awareness-based method supported by a mobile-based application to prevent unwanted pregnancies as a method of natural birth control. Methods: In a retrospective analysis, the application's efficiency as a contraceptive method was examined on data from 4054 women who used the application as contraception for a total of 2085 woman-years. Results: The number of identified unplanned pregnancies was 143 during 2053 woman-years, giving a Pearl Index of 7.0 for typical use. Ten of the pregnancies were due to the application falsely attributing a safe day within the fertile window, producing a perfect-use Pearl Index of 0.5. Calculating the cumulative pregnancy probability by life-table analysis resulted in a pregnancy rate of 7.5% per year (95% confidence interval 5.9%, 9.1% per year). Conclusions: The application appears to improve the effectiveness of fertility awareness-based methods and can be used to prevent pregnancies if couples consistently protect themselves on fertile days. |
| doi_str_mv | 10.3109/13625187.2016.1154143 |
| format | Article |
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Methods: In a retrospective analysis, the application's efficiency as a contraceptive method was examined on data from 4054 women who used the application as contraception for a total of 2085 woman-years. Results: The number of identified unplanned pregnancies was 143 during 2053 woman-years, giving a Pearl Index of 7.0 for typical use. Ten of the pregnancies were due to the application falsely attributing a safe day within the fertile window, producing a perfect-use Pearl Index of 0.5. Calculating the cumulative pregnancy probability by life-table analysis resulted in a pregnancy rate of 7.5% per year (95% confidence interval 5.9%, 9.1% per year). Conclusions: The application appears to improve the effectiveness of fertility awareness-based methods and can be used to prevent pregnancies if couples consistently protect themselves on fertile days.</description><identifier>ISSN: 1362-5187</identifier><identifier>ISSN: 1473-0782</identifier><identifier>EISSN: 1473-0782</identifier><identifier>DOI: 10.3109/13625187.2016.1154143</identifier><identifier>PMID: 27003381</identifier><identifier>CODEN: ECRCFK</identifier><language>eng</language><publisher>England: Taylor & Francis</publisher><subject>Adolescent ; Adult ; Algorithms ; Basal body temperature method ; Birth control ; Body Mass Index ; Body Temperature ; Contraception - methods ; Contraception Behavior - statistics & numerical data ; Effectiveness studies ; Female ; Fertility ; Humans ; Life Tables ; Medicin och hälsovetenskap ; menstrual cycle ; Middle Aged ; Mobile Applications - standards ; natural family planning methods ; ovulation detection ; Ovulation Detection - methods ; Ovulation Detection - standards ; Pregnancy ; Pregnancy Rate ; Pregnancy, Unwanted ; Reproductive health ; Retrospective Studies ; retrospective study ; Software ; Surveys and Questionnaires ; Sweden ; Young Adult</subject><ispartof>EUROPEAN JOURNAL OF CONTRACEPTION AND REPRODUCTIVE HEALTH CARE, 2016-01, Vol.21 (3), p.234-241</ispartof><rights>2016 The Authors. Published by Taylor & Francis. 2016</rights><rights>Copyright Taylor & Francis Ltd. 2016</rights><rights>2016 The Authors. Published by Taylor & Francis. 2016 The Authors.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c584t-1b8114b4e9bd05e1b592a3323c9e24dd201f776788d62e874e5f8827e924a9683</citedby><cites>FETCH-LOGICAL-c584t-1b8114b4e9bd05e1b592a3323c9e24dd201f776788d62e874e5f8827e924a9683</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,552,780,885</link.rule.ids><linktorsrc>$$Uhttp://kipublications.ki.se/Default.aspx?queryparsed=id:133512064$$EView_record_in_Swedish_Publication_Index_(SWEPUB)$$FView_record_in_$$GSwedish_Publication_Index_(SWEPUB)$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27003381$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttp://kipublications.ki.se/Default.aspx?queryparsed=id:133512064$$DView record from Swedish Publication Index$$Hfree_for_read</backlink></links><search><creatorcontrib>Berglund Scherwitzl, Elina</creatorcontrib><creatorcontrib>Gemzell Danielsson, Kristina</creatorcontrib><creatorcontrib>Sellberg, Jonas A.</creatorcontrib><creatorcontrib>Scherwitzl, Raoul</creatorcontrib><title>Fertility awareness-based mobile application for contraception</title><title>EUROPEAN JOURNAL OF CONTRACEPTION AND REPRODUCTIVE HEALTH CARE</title><addtitle>Eur J Contracept Reprod Health Care</addtitle><description>Objectives: The aim of the study was to retrospectively evaluate the effectiveness of a fertility awareness-based method supported by a mobile-based application to prevent unwanted pregnancies as a method of natural birth control. Methods: In a retrospective analysis, the application's efficiency as a contraceptive method was examined on data from 4054 women who used the application as contraception for a total of 2085 woman-years. Results: The number of identified unplanned pregnancies was 143 during 2053 woman-years, giving a Pearl Index of 7.0 for typical use. Ten of the pregnancies were due to the application falsely attributing a safe day within the fertile window, producing a perfect-use Pearl Index of 0.5. Calculating the cumulative pregnancy probability by life-table analysis resulted in a pregnancy rate of 7.5% per year (95% confidence interval 5.9%, 9.1% per year). Conclusions: The application appears to improve the effectiveness of fertility awareness-based methods and can be used to prevent pregnancies if couples consistently protect themselves on fertile days.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Algorithms</subject><subject>Basal body temperature method</subject><subject>Birth control</subject><subject>Body Mass Index</subject><subject>Body Temperature</subject><subject>Contraception - methods</subject><subject>Contraception Behavior - statistics & numerical data</subject><subject>Effectiveness studies</subject><subject>Female</subject><subject>Fertility</subject><subject>Humans</subject><subject>Life Tables</subject><subject>Medicin och hälsovetenskap</subject><subject>menstrual cycle</subject><subject>Middle Aged</subject><subject>Mobile Applications - standards</subject><subject>natural family planning methods</subject><subject>ovulation detection</subject><subject>Ovulation Detection - methods</subject><subject>Ovulation Detection - standards</subject><subject>Pregnancy</subject><subject>Pregnancy Rate</subject><subject>Pregnancy, Unwanted</subject><subject>Reproductive health</subject><subject>Retrospective Studies</subject><subject>retrospective study</subject><subject>Software</subject><subject>Surveys and Questionnaires</subject><subject>Sweden</subject><subject>Young Adult</subject><issn>1362-5187</issn><issn>1473-0782</issn><issn>1473-0782</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>0YH</sourceid><sourceid>EIF</sourceid><sourceid>D8T</sourceid><recordid>eNp9kk9v1DAQxS0EoqXwEUCRuHDJ4vGf2L5UoIoCUiUucLacZAIuThzsLKv99jja3UKR4OSR_XvPHs8j5DnQDQdqXgNvmAStNoxCswGQAgR_QM5BKF5TpdnDUhemXqEz8iTnW0qBC948JmdMUcq5hnNyeY1p8cEv-8rtXMIJc65bl7Gvxtj6gJWb5-A7t_g4VUNMVRenJbkO53XnKXk0uJDx2XG9IF-u332--lDffHr_8ertTd1JLZYaWg0gWoGm7alEaKVhjnPGO4NM9H3pYVCqUVr3DUOtBMpBa6bQMOFMo_kFqQ--eYfztrVz8qNLexudt8et76VCK2nDFS-8-Sc_p9j_Fp2EwLkERhtRtJcHbQFG7Dtc-w33Le6dTP6b_Rp_WqGNBsmKwaujQYo_tpgXO_rcYQhuwrjNFpQ2wiij175e_oXexm2aylcWyoBRWkpTKHmguhRzTjjcPQaoXdNgT2mwaxrsMQ1F9-LPTu5Up_EX4M0B8FMZ7eh2MYXeLm4fYhqSmzqfV___3fELsyrFAw</recordid><startdate>20160101</startdate><enddate>20160101</enddate><creator>Berglund Scherwitzl, Elina</creator><creator>Gemzell Danielsson, Kristina</creator><creator>Sellberg, Jonas A.</creator><creator>Scherwitzl, Raoul</creator><general>Taylor & Francis</general><general>Taylor & Francis Ltd</general><scope>0YH</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>K9.</scope><scope>7X8</scope><scope>5PM</scope><scope>ADTPV</scope><scope>AOWAS</scope><scope>D8T</scope><scope>ZZAVC</scope></search><sort><creationdate>20160101</creationdate><title>Fertility awareness-based mobile application for contraception</title><author>Berglund Scherwitzl, Elina ; Gemzell Danielsson, Kristina ; Sellberg, Jonas A. ; Scherwitzl, Raoul</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c584t-1b8114b4e9bd05e1b592a3323c9e24dd201f776788d62e874e5f8827e924a9683</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Adolescent</topic><topic>Adult</topic><topic>Algorithms</topic><topic>Basal body temperature method</topic><topic>Birth control</topic><topic>Body Mass Index</topic><topic>Body Temperature</topic><topic>Contraception - methods</topic><topic>Contraception Behavior - statistics & numerical data</topic><topic>Effectiveness studies</topic><topic>Female</topic><topic>Fertility</topic><topic>Humans</topic><topic>Life Tables</topic><topic>Medicin och hälsovetenskap</topic><topic>menstrual cycle</topic><topic>Middle Aged</topic><topic>Mobile Applications - standards</topic><topic>natural family planning methods</topic><topic>ovulation detection</topic><topic>Ovulation Detection - methods</topic><topic>Ovulation Detection - standards</topic><topic>Pregnancy</topic><topic>Pregnancy Rate</topic><topic>Pregnancy, Unwanted</topic><topic>Reproductive health</topic><topic>Retrospective Studies</topic><topic>retrospective study</topic><topic>Software</topic><topic>Surveys and Questionnaires</topic><topic>Sweden</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Berglund Scherwitzl, Elina</creatorcontrib><creatorcontrib>Gemzell Danielsson, Kristina</creatorcontrib><creatorcontrib>Sellberg, Jonas A.</creatorcontrib><creatorcontrib>Scherwitzl, Raoul</creatorcontrib><collection>Taylor & Francis Open Access</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>SwePub</collection><collection>SwePub Articles</collection><collection>SWEPUB Freely available online</collection><collection>SwePub Articles full text</collection><jtitle>EUROPEAN JOURNAL OF CONTRACEPTION AND REPRODUCTIVE HEALTH CARE</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Berglund Scherwitzl, Elina</au><au>Gemzell Danielsson, Kristina</au><au>Sellberg, Jonas A.</au><au>Scherwitzl, Raoul</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fertility awareness-based mobile application for contraception</atitle><jtitle>EUROPEAN JOURNAL OF CONTRACEPTION AND REPRODUCTIVE HEALTH CARE</jtitle><addtitle>Eur J Contracept Reprod Health Care</addtitle><date>2016-01-01</date><risdate>2016</risdate><volume>21</volume><issue>3</issue><spage>234</spage><epage>241</epage><pages>234-241</pages><issn>1362-5187</issn><issn>1473-0782</issn><eissn>1473-0782</eissn><coden>ECRCFK</coden><abstract>Objectives: The aim of the study was to retrospectively evaluate the effectiveness of a fertility awareness-based method supported by a mobile-based application to prevent unwanted pregnancies as a method of natural birth control. Methods: In a retrospective analysis, the application's efficiency as a contraceptive method was examined on data from 4054 women who used the application as contraception for a total of 2085 woman-years. Results: The number of identified unplanned pregnancies was 143 during 2053 woman-years, giving a Pearl Index of 7.0 for typical use. Ten of the pregnancies were due to the application falsely attributing a safe day within the fertile window, producing a perfect-use Pearl Index of 0.5. Calculating the cumulative pregnancy probability by life-table analysis resulted in a pregnancy rate of 7.5% per year (95% confidence interval 5.9%, 9.1% per year). 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| subjects | Adolescent Adult Algorithms Basal body temperature method Birth control Body Mass Index Body Temperature Contraception - methods Contraception Behavior - statistics & numerical data Effectiveness studies Female Fertility Humans Life Tables Medicin och hälsovetenskap menstrual cycle Middle Aged Mobile Applications - standards natural family planning methods ovulation detection Ovulation Detection - methods Ovulation Detection - standards Pregnancy Pregnancy Rate Pregnancy, Unwanted Reproductive health Retrospective Studies retrospective study Software Surveys and Questionnaires Sweden Young Adult |
| title | Fertility awareness-based mobile application for contraception |
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