		Cases	Insignificant stress	Significant stress	X²	P
Marriage	Married	126	84	42	21.003	0.000
Marriage	Unmarried, divorced or willowed	42	11	31	21.003	0.000
Age	<60	32	10	22	17.216	0.000
Age	>60	136	96	40	17.216	0.000
Education	Above high school	22	18	4	9.504	0.002
Education	Under high school	146	68	78	9.504	0.002
Month income	≥2000 RMB	62	32	30	6.26	0.010
Month income	<2000 RMB	106	34	72	6.26	0.010