Table 1.

General clinical indicators in the two groups (x̅ ± s)/[n (%)]

General clinical indicator		Study group (n=90)	Control group (n=90)	t/X2	P
Gender	Male	61	46	1.883	0.17
	Female	39	44
Average age (years)		38.29±2.33	38.34±2.41	0.142	0.887
Average weight (kg)		63.29±4.11	64.19±3.98	1.492	0.137
Educational background	Bachelor’s or above	30	32	1.228	0.231
	High school	43	43
	Junior high school or below	13	15
Monthly income	<1000 CNY	19	13	1.471	0.136
	1000-5000 CNY	31	30
	5000 CNY and above	40	43
Cause of illness	Traffic accident	34	30	0.819	0.345
	Fall from height	43	35
	Fall accident	10	20
	Others	3	5