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A complete case analysis was conducted with randomized group assignment (group prenatal care\u2010delivered intervention vs. one\u2010on\u2010one usual care) as the independent variable. Primary outcomes were gestational weight gain and postpartum weight change. Secondary outcomes included gestational diabetes screening and exclusive breastfeeding at 6\u2009weeks post partum. Other outcomes reported include gestational diabetes incidence, preterm birth, mode of birth, infant birth weight, and macrosomia.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Gestational weight gain was lower among group versus usual care participants (mean [SD], 9.46\u2009[7.24]\u2009kg vs. 14.40\u2009[8.23]\u2009kg; <jats:italic>p<\/jats:italic>\u2009=\u20090.10); postpartum weight change did not differ between groups. Although the proportion of women who received adequate gestational diabetes screening (78.4% group; 65.6% usual care) was similar, there were clinically important between\u2010group differences in exclusive breastfeeding (44.4% group; 25% usual care), incidence of gestational diabetes (27.3% group; 40.0% usual care), and macrosomia (8.3% group; 29.0% usual care).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>It may be possible to address multiple risk factors related to intergenerational transmission of obesity in this high\u2010risk setting using a group care\u2010delivered intervention.<\/jats:p><\/jats:sec>","DOI":"10.1002\/oby.24102","type":"journal-article","created":{"date-parts":[[2024,9,10]],"date-time":"2024-09-10T22:24:02Z","timestamp":1726007042000},"page":"1833-1843","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["A group prenatal care intervention reduces gestational weight gain and gestational diabetes in <scp>American Samoan<\/scp> women"],"prefix":"10.1002","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2601-3454","authenticated-orcid":false,"given":"Nicola L.","family":"Hawley","sequence":"first","affiliation":[{"name":"Department of Chronic Disease Epidemiology, Yale School of Public Health  New Haven Connecticut USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kima","family":"Faasalele\u2010Savusa","sequence":"additional","affiliation":[{"name":"Obesity, Lifestyle, and Genetic Adaptations Study Group  Pago Pago Samoa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mata'uitafa","family":"Faiai","sequence":"additional","affiliation":[{"name":"Department of Chronic Disease Epidemiology, Yale School of Public Health  New Haven Connecticut USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lynette","family":"Suiaunoa\u2010Scanlan","sequence":"additional","affiliation":[{"name":"Obesity, Lifestyle, and Genetic Adaptations Study Group  Pago Pago Samoa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miracle","family":"Loia","sequence":"additional","affiliation":[{"name":"Obesity, Lifestyle, and Genetic Adaptations Study Group  Pago Pago Samoa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeannette R.","family":"Ickovics","sequence":"additional","affiliation":[{"name":"Department of Social and Behavioral Sciences, Yale School of Public Health  New Haven Connecticut USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erica","family":"Kocher","sequence":"additional","affiliation":[{"name":"Department of Chronic Disease Epidemiology, Yale School of Public Health  New Haven Connecticut USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher","family":"Piel","sequence":"additional","affiliation":[{"name":"Physician Associate Program, Yale School of Medicine  New Haven Connecticut USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Madison","family":"Mahoney","sequence":"additional","affiliation":[{"name":"Yale College Yale University  New Haven Connecticut USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rachel","family":"Suss","sequence":"additional","affiliation":[{"name":"Yale College Yale University  New Haven Connecticut USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcela","family":"Trocha","sequence":"additional","affiliation":[{"name":"Vrije Universiteit  Amsterdam Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rochelle K.","family":"Rosen","sequence":"additional","affiliation":[{"name":"Center for Behavioral and Preventive Medicine Brown University  Providence Rhode Island USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bethel T.","family":"Muasau\u2010Howard","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Lyndon B. 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