Department of Health Informatics, Kyoto University School of Public Health, Kyoto, Japan.
J Public Health (Oxf). 2011 Dec;33(4):518-26. doi: 10.1093/pubmed/fdr042. Epub 2011 Jun 30.
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.
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.
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)].
Although the differences were small, being overweight was correlated with impaired physical HRQOL but not with mental HRQOL.
肥胖与死亡率增加有关，但人们对体重与健康相关生活质量（HRQOL）之间的关系知之甚少。我们旨在研究日本普通人群中的这种关系，重点关注体重过轻和超重的个体。
我们对 2003 年全国准代表性样本的健康日记研究中的数据进行了横断面分析。使用简短形式 8 健康调查来衡量 HRQOL。体重指数（BMI）是根据自我报告的身高和体重值计算得出的。我们比较了具有正常 BMI（18.5-24.9）的人与体重过轻（<18.5）、超重（25-29.9）或肥胖（≥30）的人的 HRQOL 差异。
在人群加权随机样本（5387 户）中，有 1857 户（34.5%）同意参与。在目标样本人群（3658 人）中，有 3477 人做出回应（95.1%）。在 2453 名（年龄≥18 岁）人中，我们分析了 2399 人的数据。在调整年龄、性别和慢性病状况后，我们发现超重与身体 HRQOL 受损相关[系数：-0.96（95%置信区间（CI）：-1.73，-0.20）]，但与心理 HRQOL 无关[系数：-0.17（95% CI：-0.50，0.95）]。
尽管差异较小，但超重与身体 HRQOL 受损有关，但与心理 HRQOL 无关。
