Comment on Si et al. (2021) "Predictive performance of 7 frailty instruments for short-term disability, falls and hospitalization among Chinese community-dwelling older adults: A prospective cohort study"
1 Department of Nursing, Chinese Academy of Medical Sciences - Peking Union Medical College, Peking Union Medical College Hospital (Dongdan Campus), No.1 Shuaifuyuan Wangfujing Dongcheng District, Beijing 100730, China. Electronic address: liuhongpeng12@sina.com.
2 Department of Nursing, Chinese Academy of Medical Sciences - Peking Union Medical College, Peking Union Medical College Hospital (Dongdan Campus), No.1 Shuaifuyuan Wangfujing Dongcheng District, Beijing 100730, China. Electronic address: jiaojing.2006@aliyun.com.
3 Department of Geriatrics, Chinese Academy of Medical Sciences - Peking Union Medical College, Peking Union Medical College Hospital (Dongdan Campus), No.1 Shuaifuyuan Wangfujing Dongcheng District, Beijing 100730, China. Electronic address: yidazhuml@126.com.
4 Department of Nursing, Chinese Academy of Medical Sciences - Peking Union Medical College, Peking Union Medical College Hospital (Dongdan Campus), No.1 Shuaifuyuan Wangfujing Dongcheng District, Beijing 100730, China. Electronic address: wuxinjuan@sina.com.
5 Department of Clinical Nutrition, Department of Health Medicine, Chinese Academy of Medical Sciences - Peking Union Medical College, Peking Union Medical College Hospital (Dongdan Campus), No.1 Shuaifuyuan Wangfujing Dongcheng District, Beijing 100730, China; Beijing Key Laboratory of the Innovative Development of Functional Staple and the Nutritional Intervention for Chronic Disease, Building 6, No. 24 Courtyard, Jiuxianqiao Middle Road, Chaoyang District, Beijing 100015, China. Electronic address: chenw@pumch.cn.