{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T21:00:50Z","timestamp":1791925250556,"version":"4.3.4"},"reference-count":19,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2015,8,26]],"date-time":"2015-08-26T00:00:00Z","timestamp":1440547200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"National Research University Project under Thailand's Office of the Higher Education Commission and the Diamond Research Grant of Faculty of Medicine"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2015,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>The aim of this study was to determine pregnancy outcomes among early adolescent women (aged\u2009\u2264\u200915\u2009years) compared with those in late adolescence (16\u201319 years) and adults aged 20\u201330 years.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and Methods<\/jats:title><jats:p>A retrospective cohort study was conducted on singleton pregnancies with maternal age \u226415\u2009years (early adolescent), 16\u201319 years (late adolescent), and 20\u201330 years (adult). The primary outcomes for comparison were the rates of preterm birth, low birthweight, growth restriction and cesarean section.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 33\u2009777 pregnancies, 298 early adolescent, 4456 late adolescent, and 29\u2009023 adults, were enrolled. Most baseline characteristics were comparable but rates of pregnancy complicated by medical diseases were significantly higher in the adults, especially diabetes mellitus and chronic hypertension. When compared to the adult group, the early adolescent group had significantly higher rates of preterm birth (31.9% vs 14.5%, <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.001), growth restriction (11.7% vs 7.1%, <jats:italic>P<\/jats:italic>\u2009=\u20090.002), low birthweight (28.9% vs 14.7%, <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.001), while maternal morbidity, such as pre\u2010eclampsia and placenta previa, was similar. Likewise, most of the main outcomes in early adolescents were also significantly higher than those in late adolescents, but with lesser degrees. Interestingly, the primary cesarean rate was significantly lower in early adolescent women (6.7% vs 12.3%, <jats:italic>P<\/jats:italic>\u2009=\u20090.005).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Early adolescent pregnancy was associated with higher risks of adverse pregnancy outcomes, in particular preterm birth and growth restriction, though most maternal morbidity was comparable with that in the control groups. Cesarean rate was significantly lower in early adolescent mothers. This information should be provided to women and their families.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jog.12789","type":"journal-article","created":{"date-parts":[[2015,8,27]],"date-time":"2015-08-27T03:48:15Z","timestamp":1440647295000},"page":"1726-1731","source":"Crossref","is-referenced-by-count":22,"title":["Pregnancy outcomes among mothers aged 15 years or less"],"prefix":"10.1111","volume":"41","author":[{"given":"Kuntharee","family":"Traisrisilp","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine, Chiang Mai University  Chiang Mai Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jedsada","family":"Jaiprom","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine, Chiang Mai University  Chiang Mai Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Suchaya","family":"Luewan","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine, Chiang Mai University  Chiang Mai Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Theera","family":"Tongsong","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine, Chiang Mai University  Chiang Mai Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2015,8,26]]},"reference":[{"key":"e_1_2_7_2_1","unstructured":"World Health Organization.Adolescent pregnancy.World Health Organization2010."},{"key":"e_1_2_7_3_1","unstructured":"Maternal\u2010Fetal Medicine2009:Annual Report: Department of Obstetrics and Gynecology Faculty of Medicine Chiang Mai 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