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Sleep Duration and Risk of Obesity by Sex: Nine-Year Follow-Up of the Young Lives Study in Peru

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dc.contributor.author Mercado-Gonzales, Sofia I.
dc.contributor.author Carpio-Rodriguez, Antonella N.
dc.contributor.author Carrillo Larco, Rodrigo Martín
dc.contributor.author Bernabé Ortiz, Antonio
dc.date.accessioned 2019-07-04T17:00:24Z
dc.date.available 2019-07-04T17:00:24Z
dc.date.issued 2019
dc.identifier.uri https://hdl.handle.net/20.500.12866/6907
dc.description.abstract Background: We aimed to evaluate if there is association between hours of sleep and the risk of obesity among children and whether this association differs by sex. Methods: A secondary data analysis, using information of the Young Lives study, was conducted. The outcome was obesity, based on the BMI for age z-score; the exposure was child's sleep duration (reported by parents) categorized using the National Sleep Foundation guidelines, and as a numerical variable. Baseline and three follow-ups information were used to evaluate association, reporting relative risks (RRs), and 95% confidence intervals (CIs), as well as coefficients and 95% CI. Results: Data from 1949 children, baseline mean age 4.3 (standard deviation: 0.3) and 962 (49.5%) females, were analyzed. Short sleep duration was present in 26.0% (95% CI: 24.0-28.0) at baseline. After 9.6 years of follow-up, the incidence of obesity was 0.83 (95% CI: 0.70-0.98) per 100 person-years at risk. In multivariable model (n = 1579), there was no association between short sleep duration and obesity in the whole sample (p = 0.13); but the risk of obesity was lower among girls (n = 816; RR = 0.45; 95% CI: 0.21-0.96; p = 0.03) compared with boys (n = 763; RR = 1.43; 95% CI: 0.95-2.14; p = 0.09). On the contrary, each additional hour of sleep was associated with an increase of boy's BMI mean (0.05; 95% CI: 0.02-0.08; p < 0.001), but not among girls (-0.02; 95% CI: -0.05 to 0.01; p = 0.11). Conclusions: Our results evidenced a lower risk of obesity due to short sleep duration in girls, but not in boys. Each additional hour of sleep was associated with an increase of BMI in boys, but not in girls. Strategies are needed to guarantee adequate sleep duration in Peruvian children. en_US
dc.language.iso eng
dc.publisher Mary Ann Liebert
dc.relation.ispartofseries Childhood Obesity
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject obesity en_US
dc.subject sleep en_US
dc.subject longitudinal study en_US
dc.subject risk en_US
dc.subject sex en_US
dc.title Sleep Duration and Risk of Obesity by Sex: Nine-Year Follow-Up of the Young Lives Study in Peru en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1089/chi.2018.0247
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#3.02.03
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#3.03.04
dc.relation.issn 2153-2176


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