Table 1.

Description of the sample.

	Male		Female		Total
N	%	N	%	N	%
Age
≤19	44	22.9	101	29.9	145	27.4
20	61	31.8	119	35.2	180	34.0
21	42	21.9	81	24.0	123	23.2
22	45	23.4	37	11.0	82	15.5
Total	192	100.0	338	100.0	530	100.0
Year in university
Freshman	89	46.4	158	46.8	247	46.6
Sophomore	67	34.9	99	29.3	166	31.3
Junior	36	18.8	80	23.7	116	21.9
Senior	0	0.0	1	0.3	1	0.2
Total	192	100.0	338	100.0	530	100.0
Location of university
Zhengzhou	111	57.8	158	46.8	269	50.8
Beijing	81	42.2	180	53.3	261	49.3
Total	192	100.0	338	100.0	530	100.0
Home town
Urban	93	48.4	222	64.7	315	59.4
Rural	99	51.6	116	34.3	215	40.6
Total	192	100.0	338	100.0	530	100.0