Table 1.

General characteristics of the pre-frail older adults, n (%)

Variable	Percentage	K10 score	t/F	P value
Age			1.611	0.202
60-69	89 (35.0)	13.91 ± 5.73
70-79	144 (56.7)	13.31 ± 3.82
≥ 80	21 (8.3)	15.14 ± 4.54
Gender			-1.792	0.074
Male	112 (44.1)	13.11 ± 3.85
Female	142 (55.9)	14.12 ± 5.16
Marital status			-2.541	0.012
Married	210 (82.7)	13.34 ± 4.67
Unmarried/divorced/widowed	44 (17.3)	15.27 ± 4.18
Monthly income (CNY)			3.530	0.016
0-1000	33 (13.0)	15.79 ± 5.61
1000-2999	105 (41.3)	13.82 ± 4.48
3000-4999	69 (27.2)	13.17 ± 4.38
≥ 5000	47 (18.5)	12.60 ± 4.26
Education level			3.962	0.004
Below primary school	48 (18.9)	15.75 ± 4.27
Primary school	69 (27.2)	13.03 ± 4.05
Junior high school	84 (33.1)	13.04 ± 3.62
High school	38 (15.0)	14.29 ± 7.30
College or above	15 (5.9)	12.00 ± 2.62

K10: Kessler Psychological Distress Scale-10; CNY: China Yuan.