{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T11:43:17Z","timestamp":1784202197470,"version":"3.55.0"},"reference-count":17,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T00:00:00Z","timestamp":1773187200000},"content-version":"vor","delay-in-days":10,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,3,1]],"date-time":"2026-03-01T00:00:00Z","timestamp":1772323200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Aim<\/jats:title>\n                    <jats:p>To assess fertility knowledge among Japanese medical students using the Japanese version of the Cardiff Fertility Knowledge Scale and to identify associated factors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We conducted a cross\u2010sectional survey of first\u2010 through sixth\u2010year students at Kawasaki Medical School. Fertility knowledge was assessed using the 13\u2010item Cardiff Fertility Knowledge Scale\u2013Japanese version (CFKS\u2010J), scored as the percentage of correct responses. Scores across academic years were compared using one\u2010way analysis of variance. Factors associated with the continuous knowledge score and with high fertility knowledge (\u2265\u200980%) were examined using multivariable linear and logistic regression models, adjusting for academic year and key covariates.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A total of 613 students were included. The mean fertility knowledge score was 72.7%. Scores increased from the first to third year and then plateaued (from 55.0% in first\u2010year to 83.5% in sixth\u2010year students;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001). Item\u2010level analysis showed particularly low correct responses for the obesity\u2010related item and lower accuracy for items on mumps in males, amenorrhea and the possibility of conception, and sexually transmitted infections. In multivariable models, higher academic year was independently associated with higher knowledge, whereas not remembering whether sex education had been sufficient and not remembering having thought about age at childbearing were associated with lower scores. High fertility knowledge was less likely among students who had never learned about fertility or preconception care.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Fertility knowledge among Japanese medical students improved in earlier years but plateaued thereafter. Recall\u2010 and awareness\u2010related factors and item\u2010specific gaps highlight targets for curriculum\u2010based fertility and preconception education.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/jog.70235","type":"journal-article","created":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T00:53:32Z","timestamp":1773276812000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Fertility Knowledge and Its Determinants Among Japanese Medical Students: A Cross\u2010Sectional Study Using the Cardiff Fertility Knowledge Scale"],"prefix":"10.1111","volume":"52","author":[{"given":"Mika","family":"Sugihara","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology Kawasaki Medical School, Kurashiki  Okayama Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3984-975X","authenticated-orcid":false,"given":"Kuniaki","family":"Ota","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Kawasaki Medical School, Kurashiki  Okayama Japan"},{"name":"Fukushima Medical Center for Children and Women, Fukushima Medical University, Fukushima  Fukushima Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6858-3754","authenticated-orcid":false,"given":"Eri","family":"Maeda","sequence":"additional","affiliation":[{"name":"Department of Public Health Faculty and Graduate School of Medicine, Hokkaido University, Kita\u2010Ku  Sapporo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yumiko","family":"Morimoto","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Kawasaki Medical School, Kurashiki  Okayama Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryo","family":"Matsumoto","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Kawasaki Medical School, Kurashiki  Okayama Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4443-8365","authenticated-orcid":false,"given":"Yoshiaki","family":"Ota","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Kawasaki Medical School, Kurashiki  Okayama Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Koichiro","family":"Shimoya","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Kawasaki Medical School, Kurashiki  Okayama Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,3,11]]},"reference":[{"key":"e_1_2_11_2_1","unstructured":"Nippon.Com \u201cJapan's Fertility Rate Drops to New Record Low \u201d2024."},{"key":"e_1_2_11_3_1","unstructured":"S.Nakahara \u201cBackground to Declining Birthrates\u2010Japan's Situation \u201d2025."},{"key":"e_1_2_11_4_1","volume-title":"Japan's Birth Rate Falls to A Record Low as the Number of Marriages Also Drops","author":"Yamaguchi M.","year":"2024"},{"key":"e_1_2_11_5_1","volume-title":"1 in 6 People Globally Affected by Infertility","author":"World Health O","year":"2023"},{"key":"e_1_2_11_6_1","volume-title":"Preconception Care: Maximizing the Gains for Maternal and Child Health. Policy Brief","author":"World Health O","year":"2013"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1080\/03009734.2018.1480186"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12978\u2010023\u201001628\u20106"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1093\/humrep\/dex234"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.1093\/humrep\/des402"},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.1186\/1477\u20107827\u201012\u201094"},{"key":"e_1_2_11_12_1","doi-asserted-by":"publisher","DOI":"10.1186\/1742\u20104755\u201012\u201010"},{"key":"e_1_2_11_13_1","doi-asserted-by":"publisher","DOI":"10.1080\/14681811.2023.2174094"},{"key":"e_1_2_11_14_1","doi-asserted-by":"publisher","DOI":"10.1093\/hropen\/hoab031"},{"key":"e_1_2_11_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.rbmo.2020.09.006"},{"key":"e_1_2_11_16_1","doi-asserted-by":"publisher","DOI":"10.1038\/bmt.2012.244"},{"key":"e_1_2_11_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/ijgo.14538"},{"key":"e_1_2_11_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.lanepe.2024.101027"}],"container-title":["Journal of Obstetrics and Gynaecology Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jog.70235","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/jog.70235","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jog.70235","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,24]],"date-time":"2026-03-24T02:37:29Z","timestamp":1774319849000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1111\/jog.70235"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,3]]},"references-count":17,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026,3]]}},"alternative-id":["10.1111\/jog.70235"],"URL":"https:\/\/doi.org\/10.1111\/jog.70235","archive":["Portico"],"relation":{},"ISSN":["1341-8076","1447-0756"],"issn-type":[{"value":"1341-8076","type":"print"},{"value":"1447-0756","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,3]]},"assertion":[{"value":"2025-12-11","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-02-26","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-03-11","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70235"}}