{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T13:40:33Z","timestamp":1787751633804,"version":"build-2784847793"},"reference-count":20,"publisher":"Wiley","issue":"13","license":[{"start":{"date-parts":[[2013,8,13]],"date-time":"2013-08-13T00:00:00Z","timestamp":1376352000000},"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":["BJOG"],"published-print":{"date-parts":[[2013,12]]},"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>\n                      To assess whether the risk of vulvodynia is associated with previous use of oral contraceptives (\n                      <jats:styled-content style=\"fixed-case\">OC<\/jats:styled-content>\n                      s).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design<\/jats:title>\n                    <jats:p>Longitudinal population\u2010based study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting<\/jats:title>\n                    <jats:p>\n                      Four counties in south\u2010east\n                      <jats:styled-content style=\"fixed-case\">M<\/jats:styled-content>\n                      ichigan,\n                      <jats:styled-content style=\"fixed-case\">USA<\/jats:styled-content>\n                      .\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Population<\/jats:title>\n                    <jats:p>A population\u2010based sample of women, aged 18\u00a0years and older, enrolled using random\u2010digit dialling.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Enrolled women completed surveys that included information on demographic characteristics, health status, current symptoms, past and present\n                      <jats:styled-content style=\"fixed-case\">OC<\/jats:styled-content>\n                      use, and a validated screen for vulvodynia. The temporal relationship between\n                      <jats:styled-content style=\"fixed-case\">OC<\/jats:styled-content>\n                      use and subsequent symptoms of vulvodynia was assessed using Cox regression, with\n                      <jats:styled-content style=\"fixed-case\">OC<\/jats:styled-content>\n                      exposure modelled as a time\u2010varying covariate.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Main outcome measure<\/jats:title>\n                    <jats:p>Vulvodynia, as determined by validated screen.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Women aged &lt;50\u00a0years who provided data on\n                      <jats:styled-content style=\"fixed-case\">OC<\/jats:styled-content>\n                      use, completed all questions required for the vulvodynia screen, and had first sexual intercourse prior to the onset of vulvodynia symptoms were eligible (\n                      <jats:italic>n\u00a0<\/jats:italic>\n                      =\u00a0906). Of these, 71.2% (\n                      <jats:italic>n\u00a0<\/jats:italic>\n                      =\u00a0645) had used\n                      <jats:styled-content style=\"fixed-case\">OC<\/jats:styled-content>\n                      s. The vulvodynia screen was positive in 8.2% (\n                      <jats:italic>n\u00a0<\/jats:italic>\n                      =\u00a074) for current vulvodynia and in 20.8% (\n                      <jats:italic>n\u00a0<\/jats:italic>\n                      =\u00a0188) for past vulvodynia. Although crude cross\u2010tabulation suggested that women with current or past vulvodynia were less likely to have been exposed to\n                      <jats:styled-content style=\"fixed-case\">OC<\/jats:styled-content>\n                      s prior to the onset of pain (60.7%), compared with those without this disorder (69.3%), the Cox regression analysis identified no association between vulvodynia and previous\n                      <jats:styled-content style=\"fixed-case\">OC<\/jats:styled-content>\n                      use (\n                      <jats:styled-content style=\"fixed-case\">HR<\/jats:styled-content>\n                      \u00a01.08, 95%\u00a0\n                      <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>\n                      0.81\u20131.43,\n                      <jats:italic>P\u00a0<\/jats:italic>\n                      =\u00a00.60). This null finding persisted after controlling for ethnicity, marital status, educational level, duration of use, and age at first\n                      <jats:styled-content style=\"fixed-case\">OC<\/jats:styled-content>\n                      use.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>\n                      For women aged &lt;50\u00a0years of age,\n                      <jats:styled-content style=\"fixed-case\">OC<\/jats:styled-content>\n                      use did not increase the risk of subsequent vulvodynia.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/1471-0528.12407","type":"journal-article","created":{"date-parts":[[2013,8,13]],"date-time":"2013-08-13T03:35:11Z","timestamp":1376364911000},"page":"1678-1684","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":45,"title":["Oral contraceptive use and risk of vulvodynia: a population\u2010based longitudinal study"],"prefix":"10.1111","volume":"120","author":[{"given":"BD","family":"Reed","sequence":"first","affiliation":[{"name":"Department of Family Medicine University of Michigan Ann Arbor MI USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"SD","family":"Harlow","sequence":"additional","affiliation":[{"name":"Department of Epidemiology School of Public Health University of Michigan Ann Arbor MI USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"LJ","family":"Legocki","sequence":"additional","affiliation":[{"name":"Department of Family Medicine University of Michigan Ann Arbor MI USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"ME","family":"Helmuth","sequence":"additional","affiliation":[{"name":"Department of Family Medicine University of Michigan Ann Arbor MI USA"},{"name":"Department of Epidemiology School of Public Health University of Michigan Ann Arbor MI USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"HK","family":"Haefner","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynaecology University of Michigan Ann Arbor MI USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"BW","family":"Gillespie","sequence":"additional","affiliation":[{"name":"Department of Biostatistics School of Public Health University of Michigan Ann Arbor MI USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A","family":"Sen","sequence":"additional","affiliation":[{"name":"Department of Family Medicine University of Michigan Ann Arbor MI USA"},{"name":"Department of Biostatistics School of Public Health University of Michigan Ann Arbor MI USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2013,8,13]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2011.08.012"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e318180965b"},{"key":"e_1_2_8_4_1","first-page":"82","article-title":"A population\u2010based assessment of chronic unexplained vulvar pain: have we underestimated the prevalence of vulvodynia?","volume":"58","author":"Harlow BL","year":"2003","journal-title":"J Am Med Womens Assoc"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1089\/jwh.2007.0677"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/LGT.0b013e318168e73d"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1093\/aje\/kwf037"},{"key":"e_1_2_8_8_1","first-page":"47","article-title":"Vulvar vestibulitis syndrome: an exploratory case\u2010control study","volume":"83","author":"Bazin S","year":"1994","journal-title":"Obstet Gynecol"},{"key":"e_1_2_8_9_1","first-page":"102","article-title":"Influence of oral contraceptive use on the risk of adult\u2010onset vulvodynia","volume":"53","author":"Harlow BL","year":"2008","journal-title":"J Reprod Med"},{"key":"e_1_2_8_10_1","first-page":"166","article-title":"Vulvar vestibulitis in the north of Sweden. 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