Adolescents' self-perceived and actual weight: Which plays a dominant role in weight loss behaviour in Lebanon?
2018
Assaad, Sarah | Anouti, Sirine | Naja, Farah A. | Nasreddine, Lara M. | Hwalla, Nahla C. | Mehio-Sibai, Abla Mehio | Epidemiology and Population Health (EPHD) | Department of Nutrition and Food Sciences | Faculty of Health Sciences (FHS) | Faculty of Agricultural and Food Sciences (FAFS) | American University of Beirut
Background: The decision to lose weight among adolescents is complex and is guided by a number of body-related factors. This study examined the extent of agreement between actual weight, measured as body mass index, and self-perceived weight and assessed their relative importance in weight loss behaviour among Lebanese adolescents. Methods: Data on 278 adolescents aged 13–17 years were drawn from the nationwide Nutrition and Non-Communicable Disease Risk Factor Survey (Lebanon, 2009). Binary multivariable logistic regressions were conducted to test associations with “effort to lose weight” as the outcome variable, controlling for a number of potential confounders. Results: Close to 36% reported trying to lose weight. Around 21% and 13% were overweight and obese, respectively, and 40% and 10% perceived their weight as slightly high and very high, respectively. Inaccurate perceivers, those underestimating or overestimating their weight, constituted 39%, with overall percent agreement between actual and self-perceived weight being 60.8% (kappa statistic = 0.319, 95% CI [0.242, 0.396]). About a third of the overweight adolescents (30.5%) and more than half of the obese (56.8%) underestimated their weight. In the multivariable analysis, self-perceived weight was statistically significant and a stronger predictor of weight loss effort than body mass index (adjusted odds ratios = 14.42 and 6.42 for slightly high and very high perceived weight, respectively, compared to odds ratios = 1.47 and 2.31 for overweight and obese adolescents, respectively). Conclusion: Health professionals need to consider self-perceived weight in conjunction with actual weight in their pursuit of weight management goals and in planning prevention programmes that guide weight loss behaviours for adolescents. © 2017 John Wiley & Sons Ltd
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