[Incidence of fall related injury in people aged 50 and above and risk factors in 8 provinces in China: a cross-sectional study].

Objective: To estimate the incidence and distribution characteristics of fall related injury in people aged ≥50 years in 8 provinces in China and related physiological, psychological and social risk factors. Methods: Cross-sectional data were collected from adults aged ≥50 years participating in the World Health Organization (WHO) study on global ageing and adult health (SAGE) round 1 in China. Two-level hierarchical logistic model was used to identify the related factors for fall-related injury. All the models were stratified by living area (urban/rural). Results: Estimated incidence of fall related injury (road traffic injury was not included) was 3.2%. Ageing and multiple chronic conditions (OR=2.55, 95%CI: 1.41-4.64) was significantly associated with the incidence of fall related injury in urban area. In rural area, depression (OR=4.33, 95% CI: 2.52-7.42) and multiple chronic conditions (OR=2.46, 95%CI: 1.37-4.41) were associated with the incidence of fall related injury. Conclusions: This study estimated the incidence of fall related injury in adults aged ≥50 years in 8 provinces in China. A significant association between multiple chronic conditions and fall related injury were found in both urban and rural residents. Targeted measures should be taken for the prevention and control of chronic diseases in elderly population.目的： 估计中国8个省份≥50岁人群跌倒伤害发生率和人群分布情况，分析跌倒伤害相关的生理、心理和社会危险因素。 方法： WHO"全球老龄化与成人健康研究"（SAGE）中国项目第一轮横断面数据，采用两水平（个体层面和社区层面）logistic模型按城乡进行分层分析相关因素与跌倒伤害的关系。 结果： 本研究推算中国8个省份≥50岁老年人群中，跌倒伤害的发生率为3.2%。多元分析发现在城市地区，增龄、罹患≥3种的慢性病（OR=2.55，95%CI：1.41~4.64）可以增大跌倒伤害的发生危险；在农村地区，罹患抑郁（OR=4.33，95%CI：2.52~7.42）和罹患≥3种慢性病（OR=2.46，95%CI：1.37~4.41）也可以增大跌倒伤害的发生危险。 结论： 本研究提供了一个基于中国8个省份≥50岁抽样人群跌倒伤害发生率。此外，本研究还发现增龄和共患多种慢性病会增大跌倒伤害的风险，提示采取措施防止和延缓老年人群慢性病发病可能有助于降低跌倒伤害的发生的概率。.