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  • Title: The relation between self-reported body weight and health-related quality of life: a cross-sectional study in Japan.
    Author: Takahashi Y, Sakai M, Tokuda Y, Takahashi O, Ohde S, Nakayama T, Fukuhara S, Fukui T, Shimbo T.
    Journal: J Public Health (Oxf); 2011 Dec; 33(4):518-26. PubMed ID: 21719459.
    Abstract:
    BACKGROUND: Whilst being obese is associated with increased mortality, less is known about the relationship between body weight and health-related quality of life (HRQOL). We aimed to examine this relationship in the general Japanese population, focusing on both underweight and overweight individuals. METHODS: We cross sectionally analyzed data from the Health Diary Study, which surveyed health-related behavior in a nationally quasi-representative sample from 2003. HRQOL was measured using the Short Form-8 Health Survey. Body mass index (BMI) was calculated from self-reported height and weight values. We compared differences in HRQOL in people with normal BMI (18.5-24.9) with those with underweight (<18.5), overweight (25-29.9) or obese (≥30) BMIs. RESULTS: Among a population-weighted random sample (5387 households), 1857 households (34.5%) agreed to participate. Of the targeted sample population (3658 people), 3477 responded (95.1%). Of 2453 people (age ≥18 years), we analyzed data from 2399 people. After adjusting for age, sex and status of chronic conditions, we found that being overweight was correlated with impaired physical HRQOL [coefficient:-0.96 (95% confidence interval (CI): -1.73, -0.20)] but not with mental HRQOL [coefficient: -0.17 (95% CI: -0.50, 0.95)]. CONCLUSIONS: Although the differences were small, being overweight was correlated with impaired physical HRQOL but not with mental HRQOL.
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