Location: Children's Nutrition Research CenterTitle: Association between sleep and overweight/obesity among women of childbearing age in Canada
|VEZINA-IM, LYDI - Children'S Nutrition Research Center (CNRC)|
|LEBEL, ALEXANDRE - Laval University|
|GAGNON, PIERRE - Quebec Heart And Lung Research Institute|
|NICKLAS, THERESA - Children'S Nutrition Research Center (CNRC)|
|BARANOWSKI, TOM - Children'S Nutrition Research Center (CNRC)|
Submitted to: Canadian Journal of Public Health
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 2/27/2018
Publication Date: 4/19/2018
Citation: Vezina-Im, L.A., Lebel, A., Gagnon, P., Nicklas, T.A., Baranowski, T. 2018. Association between sleep and overweight/obesity among women of childbearing age in Canada. Canadian Journal of Public Health. https://doi.org/10.17269/s41997-018-0071-4.
Interpretive Summary: Sleep (duration and quality) have been related to obesity among people in various demographic groups. Sleep has been inconsistently related to obesity among adult women. Parts of the limitations in this literature have been modest sample size s and not controlling for many likely confounding variables. This study was conducted in a large sample of women of child bearing age in Canada and controlled for all available variables reflecting likely influences on obesity. Sleep duration was related to obesity when not controlling for any confounding variables, but not in the models controlling for likely confounding variables. Sleep quality was not related to obesity in any of the models. It does not appear that sleep is related to obesity among Canadian women of child bearing age.
Technical Abstract: Tests of the relationship between sleep and overweight/obesity (OW/OB) among women have been inconsistent. Few studies reporting such associations have focused on women of childbearing age. This paper investigates this association among Canadian women of childbearing age. Data were from the Canadian Community Health Survey 2011-2014. The sample consisted of women aged 18-44 years. All variables were self-reported. Sleep duration was dichotomized as insufficient (<7 h/night) or adequate =7 h/night). A composite score of sleep quality was used and dichotomized as poor none/little of the time or some/most/all of the time. Height and weight were used to calculate body mass index. Associations between sleep and OW/OB were assessed using logistic regression analyses with survey weights. Three models were computed for sleep duration/quality: model without covariates, model adjusted for demographics (age, ethnicity, level of education, household income, marital status, employment, parity, region, and season), and model adjusted for demographics and variables associated with OW/OB (mood disorder, fruit and vegetable intake, physical activity, smoking, and alcohol). Total sample consisted of 9749 women of childbearing age. Thirty-eight percent had insufficient sleep duration. Sleep duration was significantly associated with OW/OB in the model with no covariates and discriminated 52.8% of women of childbearing age, but this association was no longer significant in the models adjusted for covariates. Sleep quality was not significantly linked to OW/OB in any of the models. Targeting sleep alone would likely not contribute to lower risk of OW/OB among Canadian women of childbearing age. Additional studies, especially longitudinal ones, are needed to confirm these findings.