表 2. Grip strength and chronic multimorbidities in Chinese over 40 years old.

中国40岁及以上中老年人的握力水平和慢病共病患病状况

Characteristics of respondents	2011 (n=13 188)	2015 (n=15 180)	P
Grip strength/case (%)			<0.001
First quantile (Q1)	308 (23.4)	4 037 (26.6)
Second quantile (Q2)	3 302 (25.0)	4 111 (27.1)
Third place (Q3)	3 305 (25.1)	3 807 (25.1)
Fourth quartile (Q4)	3 501 (26.5)	3 225 (21.2)
Suffering from more than 3 chronic diseases/case (%)			<0.001
Yes	2 402 (18.2)	3 676 (24.2)
No	10 786 (81.8)	11 504 (75.8)
Suffering from more than 5 chronic diseases/case (%)			<0.001
Yes	436 (3.3)	937 (6.2)
No	12 752 (96.7)	14 243 (93.8)