{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,6]],"date-time":"2025-10-06T03:40:50Z","timestamp":1759722050396,"version":"build-2065373602"},"reference-count":32,"publisher":"BMJ","issue":"12","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["J Epidemiol Community Health"],"accepted":{"date-parts":[[2015,6,22]]},"published-print":{"date-parts":[[2015,12]]},"abstract":"<jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>We aimed to characterise between-women and within-women weight change in adult women, and to assess the association of sociodemographic, reproductive and lifestyle characteristics with the variations.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>This study comprised 1040 adult women from a population-based cohort of adults from Porto, Portugal, assembled in 1999\u20132003 and re-evaluated in 2005\u20132008 (median follow-up 5\u2005years). A mixed-effects model for longitudinal analysis of body weight was fitted, with random intercepts and random slopes. Multivariate-adjusted coefficients with 95% CIs were computed for the determinants of weight at baseline and weight change between visits.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>There was an average crude increase of 0.11\u2005kg of measured weight per calendar year (95% CI 0.05 to 0.17). In a multivariate model, despite not explaining differences in weight between women at baseline, years of fertile life were associated with individual weight change: \u22120.34\u2005kg\/year for women with up to 21\u2005years of fertile life, whereas after that, weight increased progressively more with increasing fertile time (21.1\u201334\u2005years: \u22120.34\u2005kg+0.42\u2005kg=0.08\u2005kg; 34.1\u201341\u2005years: \u22120.34\u2005kg+0.46\u2005kg=0.12\u2005kg) up to 0.44\u2005kg\/year above 41\u2005years. Height, age, education, marital status, residential neighbourhood deprivation, number of children delivered and use of oral contraceptives, influenced interindividual weight variation at baseline, but did not influence weight change from baseline to follow-up.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>Cross-sectional determinants of weight and those of weight change over time are vary. Reproductive factors play important roles in explaining both differences among women as well as in individual weight change over time.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1136\/jech-2015-205840","type":"journal-article","created":{"date-parts":[[2015,7,10]],"date-time":"2015-07-10T22:36:12Z","timestamp":1436567772000},"page":"1162-1168","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Weight change and its determinants in Portuguese adult women: a longitudinal analysis in the EPIPorto cohort"],"prefix":"10.1136","volume":"69","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9484-1887","authenticated-orcid":false,"given":"Ana","family":"Henriques","sequence":"first","affiliation":[{"name":"EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal"}]},{"given":"Milton","family":"Severo","sequence":"additional","affiliation":[{"name":"EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal"},{"name":"Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal"}]},{"given":"Lu\u00eds","family":"Alves","sequence":"additional","affiliation":[{"name":"EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal"}]},{"given":"Henrique","family":"Barros","sequence":"additional","affiliation":[{"name":"EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal"},{"name":"Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal"}]},{"given":"Ana","family":"Azevedo","sequence":"additional","affiliation":[{"name":"EPIUnit, Institute of Public Health, University of Porto, Porto, Portugal"},{"name":"Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal"}]}],"member":"239","published-online":{"date-parts":[[2015,7,10]]},"reference":[{"key":"2025100520145269000_69.12.1162.1","unstructured":"Branca F , Nikogosian H , Lobstein T . 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Recommended dietary allowances. 10th edn. Washington DC: 1989 by the National Academy of Sciences., 1989."},{"key":"2025100520145269000_69.12.1162.20","doi-asserted-by":"publisher","DOI":"10.1016\/j.jada.2006.11.008"},{"key":"2025100520145269000_69.12.1162.21","doi-asserted-by":"crossref","first-page":"899","DOI":"10.1093\/ajcn\/68.4.899","article-title":"Clinical guidelines on the identification, evaluation, and treatment of overweight and obesity in adults: executive summary. Expert Panel on the Identification, Evaluation, and Treatment of Overweight in Adults","volume":"68","year":"1998","journal-title":"Am J Clin Nutr"},{"key":"2025100520145269000_69.12.1162.22","unstructured":"Twisk T . Applied longitudinal data analysis for epidemiology: a practical guide. New York: Cambridge University Press, 2003."},{"key":"2025100520145269000_69.12.1162.23","doi-asserted-by":"crossref","first-page":"1133","DOI":"10.1038\/ijo.2013.204","article-title":"Multifactorial analysis of changes in body mass index across the adult life course: a study with 65 years of follow-up","volume":"38","author":"Dahl","year":"2013","journal-title":"Int J Obes (Lond)"},{"key":"2025100520145269000_69.12.1162.24","doi-asserted-by":"publisher","DOI":"10.1038\/sj.ijo.0802150"},{"key":"2025100520145269000_69.12.1162.25","doi-asserted-by":"publisher","DOI":"10.1038\/sj.ijo.0801236"},{"key":"2025100520145269000_69.12.1162.26","doi-asserted-by":"crossref","first-page":"2606","DOI":"10.1002\/oby.20875","article-title":"Persistent financial hardship, 11-year weight gain and health behaviors in the Whitehall II study","volume":"22","author":"Conklin","year":"2014","journal-title":"Obesity (Silver Spring)"},{"key":"2025100520145269000_69.12.1162.27","doi-asserted-by":"publisher","DOI":"10.1089\/jwh.2012.4241"},{"key":"2025100520145269000_69.12.1162.28","doi-asserted-by":"publisher","DOI":"10.1172\/JCI111040"},{"key":"2025100520145269000_69.12.1162.29","doi-asserted-by":"publisher","DOI":"10.1210\/jc.2008-0701"},{"key":"2025100520145269000_69.12.1162.30","doi-asserted-by":"crossref","unstructured":"D\u00f6tsch J , D\u00f6rr H , Wildt L . 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