中国老年人不同体质指数与抑郁之间的关系研究

Association between body mass index and depression among the Chinese elderly

目的了解中国老年人抑郁患病情况,并探讨不同体质指数(body mass index,BMI)与抑郁之间的关系。方法采用2015年"中国健康与养老追踪调查"(China health and retirement longitudinal study,CHARLS)数据,共纳入全国150个县级单位,450个村级或社区单位60岁及以上老年人10 403例,应用Logistic回归对BMI与抑郁的关系进行研究。结果中国老年人抑郁发生率为32.7%;控制社会人口学、健康行为方式、日常生活能力等因素后发现,在男性老年人当中,与体重正常组相比,超重组(OR=0.728,95%CI:0.593~0.893)和肥胖组(OR=0.582,95%CI:0.413~0.821)患抑郁的风险较低;在女性老年人中,偏瘦,超重和肥胖与抑郁的关联均无统计学意义(均有P>0.05)。结论在中国男性老年人中,BMI与抑郁相关,但这种关联不存在于女性中。

Objective To investigate the prevalence of depression among Chinese elderly and to explore the relationship between body mass index （BMI） and depression. Methods Our data were collected from the 2015 China health and retirement longitudinal study （CHARLS）. 10 403 elderly participants aged 60 years and older from 450 village- level units and community units of 150 county-level units were selected in this study. Logistic regression was used to ex- plore the relationship between BMI and depression. Results The prevalence of depression among Chinese elderly was 32. 7%. Among the elderly men, after controlling the socM demographic factors, healthy behavior, activities of daily living and other confounding factors, the overweight group （ OR =0. 728, 95% CI：0. 593 -0. 893） and the obese group （ OR =0. 582, 95% CI：0. 413 -0. 821 ） were associated with depression, when compared with the normal group. However, there was no significant relationship between underweight, overweight, obese and depression among elderly women （ all P 〉 0. 05 ）. Conclusions BMI is associated with depression only among elderly men in China, but this association did not ex- ist among elderly women.