2002—2015年中国60岁及以上老年人低体重发生率及变化趋势

Prevalence and trends of low body weight among elderly populationaged 60 years and above in China in 2002-2015

目的了解中国60岁及以上老年人低体重的现状及变化趋势。方法数据来自2002年中国居民营养与健康状况调查、2010—2013年中国居民营养与健康监测以及2015年中国成人慢性病与营养监测,历次调查/监测均采用多阶段分层整群随机抽样方法,2002年从132个监测点抽取60岁及以上人群样本27778人,2010—2013年从150个监测点抽取34581人,2015年从302个监测点抽取59576人。通过问卷和体格检查收集研究对象的性别、出生日期、身高、体重等信息。结果2002—2015年中国60岁及以上老年人低体重率均呈下降趋势(P<0.01),低体重率由2002年的11.67%下降到2015年的5.19%,其中男性由2002年的11.51%下降到2015年的5.21%,女性由2002年的11.83%下降到2015年的5.17%。随着年龄逐渐增高,老年人低体重发生率呈增高趋势。城市60岁及以上老年人低体重率由2002年的5.85%下降到2015年的3.31%,农村由2002年的16.25%下降到2015年的6.67%。2002—2015年中国7个地理区域的老年人低体重发生率均呈下降趋势,其中2015年华南地区低体重率最高[9.49%(95%CI 8.61%~10.38%)],华北地区低体重率最低[2.55%(95%CI 2.15%~2.95%)]。结论2002—2015年中国60岁及以上老年人低体重率呈下降趋势,随年龄增加老年人低体重发生率呈增高趋势,农村高于城市,华南地区高于其他地理区域。

OBJECTIVE Understand the current situation and changing trendsof low body weight in elderly population aged 60 years and above.METHODS Data wascollected from 2002 Chinese Nutrition and Health Survey,2010-2013 Chinese Nutritionand Health Surveillance and 2015 Chinese Adult Chronic Disease and NutritionSurveillance.Multi-stage stratified cluster random sampling was used for all surveys orsurveillance.In 2002,27778 samples of people aged 60 and over were taken from 132 monitoring sites in China's Mainland.In 2010-2013,34581 subjects were selected from150 monitoring points in China's Mainland.In 2015,59576 subjects were selected from 302monitoring points in China's Mainland.Questionnaires collected basic information such asgender,and date of birth,and information such as height and weight were collectedthrough physical examination.RESULTS The prevalence of low body weight in theelderly aged 60 years and above showed a downward trend from 2002 to 2015 in China(P<0.01).The prevalence of low body weight decreased from 11.67%in 2002 to 5.19%in2015.The prevalence of low body weight among males decreased from 11.51%in 2002 to5.21%in 2015.The prevalence of low body weight among females decreased from11.83%in 2002 to 5.17%in 2015.The prevalence of low body weight in the elderlyaged 60 years and above showed an upward trend with age.The prevalence of low bodyweight in urban areas decreased from 5.85%in 2002 to 3.31%in 2015.The prevalenceof low body weight in rural areas decreased from 16.25%in 2002 to 6.67%in 2015.Theprevalence of low body weight in seven geographic regions of China decreased from 2002 to2015.The prevalence of low body weight was highest in the elderly population aged 60years and above in South China(9.49%(95%CI 8.61%-10.38%))and lowest in NorthChina(2.55%(95%CI 2.15%-2.95%))in 2015.CONCLUSION The prevalence oflow body weight among the elderly aged 60 years and above in China decreased from 2002to 2015.The prevalence of low body weight increased with age.The prevalence washigher in rural areas than in urban areas,and the prevalence in South China was higherthan in other geographic regions.