表 2. Basic information of self-rated health (SRH) of older adults (n=1179) .
老年人自评健康基本情况（n=1179）
| Variable | Case (%) | The average of SRH | χ 2 | P |
| Gender | 8.724 | 0.068 | ||
| Male | 558 (47.33) | 3.088 | ||
| Female | 621 (52.67) | 2.916 | ||
| Age/yr. | 3.342 | 0.502 | ||
| 60-74 | 928 (78.71) | 3.014 | ||
| ≥75 | 251 (21.29) | 2.840 | ||
| Education | 127.869 | <0.001 | ||
| Primary school or below | 650 (55.13) | 2.780 | ||
| Junior middle school | 286 (24.26) | 3.171 | ||
| High school | 156 (13.23) | 3.321 | ||
| Bachelor degree or above | 87 (7.38) | 3.471 | ||
| Active social interaction | 39.314 | 0.001 | ||
| 1 | 172 (14.59) | 2.791 | ||
| 2 | 392 (33.25) | 2.954 | ||
| 3 | 301 (25.53) | 3.010 | ||
| 4 | 244 (20.70) | 3.127 | ||
| 5 | 70 (5.94) | 3.243 | ||
| Social contact with relatives | 59.490 | <0.001 | ||
| 1 | 215 (8.24) | 2.767 | ||
| 2 | 710 (60.22) | 2.987 | ||
| 3 | 188 (15.95) | 3.277 | ||
| 4 | 57 (4.83) | 3.053 | ||
| 5 | 9 (0.76) | 3.111 | ||
| Social contact with neighbors | 34.297 | 0.080 | ||
| 1 | 236 (20.02) | 2.953 | ||
| 2 | 138 (11.70) | 2.964 | ||
| 3 | 122 (10.35) | 3.049 | ||
| 4 | 78 (6.62) | 2.987 | ||
| 5 | 123 (10.43) | 3.081 | ||
| 6 | 227 (19.25) | 2.960 | ||
| 7 | 255 (21.63) | 3.027 | ||
| Social contact with friends | 68.755 | <0.001 | ||
| 1 | 250 (21.20) | 2.720 | ||
| 2 | 186 (15.78) | 2.887 | ||
| 3 | 221 (18.74) | 3.014 | ||
| 4 | 86 (7.29) | 3.314 | ||
| 5 | 153 (12.98) | 3.131 | ||
| 6 | 162 (13.74) | 3.099 | ||
| 7 | 121 (10.26) | 3.182 |