Table 2 Basic characteristics of the sample.
Variables | Total (n = 19,438) | Contracted (n = 800) | No contracted (n = 18,638) | P/t |
|---|---|---|---|---|
Area | < 0.001 | |||
West | 6333 (32.58) | 281 (35.12) | 6052 (32.47) | |
Centre | 6535 (33.62) | 216(27.00) | 6319 (33.90) | |
East | 6570 (33.80) | 303 (37.88) | 6267 (33.62) | |
Residence | 0.102 | |||
Urban | 7805 (40.15) | 299 (37.38) | 7506 (40.27) | |
Rural | 11633 (59.85) | 501 (62.62) | 11132 (59.73) | |
Gender | 0.002 | |||
Male | 9242 (47.55) | 424 (52.00) | 8818 (47.31) | |
Female | 10196 (52.45) | 376 (47.00) | 9820 (52.69) | |
Age (years) | − 3.784 | |||
Mean ± S.D | 61.99 ± 10.03 | 63.31 ± 10.15 | 61.94 ± 10.02 | |
Education | 0.009 | |||
Junior high school and above | 6695 (34.44) | 310 (38.75) | 6385 (34.26) | |
Elementary school and below | 12743 (65.56) | 490 (61.25) | 12253 (65.74) | |
Marital status | 0.691 | |||
Marriage | 19320 (99.39) | 796 (99.50) | 18524 (99.39) | |
Unmarried | 118 (0.61) | 4 (0.50) | 114 (0.61) | |
Insurance | 0.012 | |||
Yes | 18860 (97.03) | 788 (98.50) | 18072 (96.96) | |
No | 578 (2.97) | 12 (1.50) | 566 (3.04) | |
Ln (house income) (yuan) | − 0.548 | |||
Mean ± S.D | 8.87 ± 2.60 | 8.92 ± 2.50 | 8.87 ± 2.61 | |
Smoke | 0.611 | |||
Yes | 898 (4.62) | 34 (4.25) | 864 (4.64) | |
No | 18540 (95.38) | 766 (95.75) | 17774 (95.36) | |
Drink | 0.925 | |||
Yes | 6566 (33.78) | 269 (33.62) | 6297 (33.79) | |
No | 12872 (66.22) | 531 (66.38) | 12341 (66.21) | |
Chronic diseases | < 0.001 | |||
Yes | 9581 (49.29) | 465 (58.13) | 9116 (48.91) | |
No | 9857 (50.71) | 335 (41.88) | 9522 (51.09) | |
Outpatient | < 0.001 | |||
Yes | 3201 (16.47) | 181 (22.62) | 3020 (16.20) | |
No | 16237 (83.53) | 619 (77.38) | 15618 (83.80) | |
Inpatient | 0.001 | |||
Yes | 3282 (16.88) | 170 (21.25) | 3112 (16.70) | |
No | 16156 (83.12) | 630 (78.75) | 15526 (83.30) | |
Social activities | 0.037 | |||
Yes | 10305 (53.01) | 453 (56.62) | 9852 (52.86) | |
No | 9133 (46.99) | 347 (43.38) | 8786 (47.14) | |
