{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T11:17:24Z","timestamp":1789039044893,"version":"build-2803163510"},"reference-count":30,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2021,5,6]],"date-time":"2021-05-06T00:00:00Z","timestamp":1620259200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000071","name":"National Institute of Child Health and Human Development","doi-asserted-by":"publisher","award":["R01HD086742"],"award-info":[{"award-number":["R01HD086742"]}],"id":[{"id":"10.13039\/100000071","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000071","name":"National Institute of Child Health and Human Development","doi-asserted-by":"publisher","award":["R21HD072326"],"award-info":[{"award-number":["R21HD072326"]}],"id":[{"id":"10.13039\/100000071","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Paediatric Perinatal Epid"],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>The accuracy of birth outcome data provided by Internet\u2010based cohort study participants has not been well studied.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We compared self\u2010reported data on birth characteristics in Pregnancy Study Online (PRESTO), an Internet\u2010based prospective cohort study of North American pregnancy planners, with birth certificate data. At enrolment, participants were aged 21\u201045\u00a0years, attempting conception, and not using fertility treatment. Women completed online questionnaires during preconception, early and late pregnancy, and postpartum. We requested birth certificate data during 2014\u20102019 from seven health departments in states with the most participants. After restricting to singleton births, we assessed specificity, sensitivity, and agreement comparing self\u2010reported data from postpartum questionnaires with birth certificate data for gestational age at delivery (GA) and birthweight (grams). Our primary measure of self\u2010reported GA (weeks) was calculated as [280\u2010(due date\u2010birth date)]\/7. We used log\u2010binomial regression to assess predictors of agreement.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>We linked 85% (771\/909) of women in selected states. Median age of women was 30\u00a0years (range: 21\u201042), 84% had\u00a0\u2265\u00a016\u00a0years of education, nearly 96% were married, 12% had household incomes &lt;$50\u00a0000, 32% were parous, and 85% identified as non\u2010Hispanic White. Median recall interval was 6\u00a0months. Among those with self\u2010reported data, 89% reported the same GA as the birth certificate and 98% reported GA within 1\u00a0week of the birth certificate. Self\u2010report of preterm birth (GA\u00a0&lt;\u00a037\u00a0weeks) agreed with information from birth certificates for 100% of women; sensitivity was 100%, and specificity was 99%. Self\u2010reported low birthweight (&lt;2500 grams) agreed with birth certificates for 93% of women; sensitivity and specificity were 93% and \u226599%, respectively. Predictors of poorer agreement included higher parity and longer pregnancy attempt time for GA, and lower education and longer recall interval for birthweight.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Self\u2010reported data on GA and birthweight from an Internet\u2010based cohort showed high accuracy compared with birth certificates.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ppe.12769","type":"journal-article","created":{"date-parts":[[2021,5,7]],"date-time":"2021-05-07T17:39:28Z","timestamp":1620409168000},"page":"590-595","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Accuracy of self\u2010reported birth outcomes relative to birth certificate data in an Internet\u2010based prospective cohort study"],"prefix":"10.1111","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2138-3752","authenticated-orcid":false,"given":"Lauren A.","family":"Wise","sequence":"first","affiliation":[{"name":"Department of Epidemiology Boston University School of Public Health Boston MA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tanran R.","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Epidemiology Boston University School of Public Health Boston MA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amelia K.","family":"Wesselink","sequence":"additional","affiliation":[{"name":"Department of Epidemiology Boston University School of Public Health Boston MA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6858-5450","authenticated-orcid":false,"given":"Sydney K.","family":"Willis","sequence":"additional","affiliation":[{"name":"Department of Epidemiology Boston University School of Public Health Boston MA 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