Subnotificação da ingestão alimentar e fatores associados

Abstract

Objective: To assess the energy intake underreporting and associated factors among women waiting for bariatric surgery at the public healthcare service of a city in the state of Sao Paulo-Brazil. Methods: The sample consisted of 100 obese women. Three 24-hour recalls were used to estimate energy intake (EI) and physical activity level (PAL). Resting metabolic rate (RMR) was determined by indirect calorimetry. The ratio between reported energy intake and resting metabolic rate (rEI:RMR) was used to assess the underreporting and the results were compared with the cut-off points obtained by the Goldberg equation. The association between underreporting and the women’s characteristics was assessed by the Z-test and the non-parametric data were compared by the Mann-Whitney test. Results and Conclusions: The ratio rEI:RMR differed significantly between the underreporting and non-underreporting groups (p<0.0001). Forty-seven percent of women underreported their energy intake being that, this proportion was higher among women who reported higher physical activity levels (p=0.006) and lower among women who reported lower physical activity levels (p<0.001). The proportion of underreporting was also higher among women who had only completed elementary school (p<0.002) and lower among those who completed high school (p <0.03). Women belonging to the socioeconomic class C or below also presented a higher proportion of underreporting (p<0.049). Bariatric surgery candidates present high rates of energy intake underreporting, especially those with lower education levels, of low socioeconomic classes and/or higher physical activity levels