年龄
18~29	542	130	24.0	126	23.3	146	26.9	325	59.9	188	34.7	380		70.0
30~39	388	112	28.8	127	32.8	155	40.0	189	48.7	109	28.2	249		64.2
40~49	393	121	30.7	189	48.1	249	63.5	175	44.5	81	20.6	289	73.6
50~59	473	151	32.0	283	59.8	355	75.0	140	29.6	54	11.4	356	75.3
≥60	104	35	33.3	37	36.0	98	94.2	50	48.0	0	0.0	73	70.0
χ²值		10.304		160.847		354.372		95.307		116.512		14.383
p值		0.036		0.000		0.000		0.000		0.000		0.006
合计	1900	549	28.9	762	40.1	1003	52.8	879	46.2	432	22.7	1347		70.9