The association between children's food habits, anthropometric parameters and health-related quality of life in Chilean school-age children

Introduction: children's food habits have an influence on physical and mental health and should be monitored. Objective: the purpose of this study was to determinate the association between children's food habits (i.e., Mediterranean diet adherence), anthropometric parameters and health-related quality of life (HRQoL) in Chilean schoolchildren. Material and methods: girls (n = 282, 11.86 +/- 0.82 years) and boys (n = 352, 12.02 +/- 0.87 years) enrolled in public schools were included in this study (n = 634). Body mass index (BMI), waist circumference (WC), waist-to-height ratio (WtHR), body fat (BF), nutritional level and HRQoL were evaluated. Results: the schoolchildren with high nutritional levels reported higher HRQoL (p = 0.018) and presented lower BMI, WC and WtHR (p < 0.001). Likewise, according to the following questions: Have your parent(s) treated you fairly? and Have you felt full of energy? The schoolchildren with high nutritional levels reported the major proportion in very and extremely answers (p < 0.001). The BMI was negatively correlated with HRQoL (r = -0.33, p < 0.05). Beside, children's food habits had significant correlation with HRQoL (r = 0.48, p = 0.002). The BMI (B = -0.41, 95% CI = - 0.55, 0.93, p = 0.001) and children's food habits (B = -0.78, 95% CI = -0.09, -0.02, p = 0.002) reported associations with HRQoL. Conclusion: in conclusion, the nutritional level (i.e., Mediterranean diet adherence) and BMI presented associations with HRQoL in Chilean schoolchildren; therefore, it is important to consider these results and develop different strategies in schoolchildren to improve their nutritional levels, as HRQoL represents a measure of happiness or satisfaction with life.