表 1. Sociodemographic characteristics of Chinese aged over 40.
中国40岁及以上中老年人的社会人口学特征
| Characteristics of respondents | 2011 (n=13 188) | 2015 (n=15 180) | P |
| Education level/case (%) | 0.011 | ||
| Illiterate | 3 641 (27.6) | 4 262 (28.1) | |
| Below elementary school | 2 403 (18.2) | 2 732 (18.0) | |
| Primary school | 2 993 (22.7) | 3 267 (21.5) | |
| Junior high school | 2 716 (20.6) | 3 085 (20.3) | |
| High school | 1 202 (9.1) | 1 532 (10.1) | |
| College and above | 233 (1.8) | 302 (1.9) | |
| Smoking status/case (%) | 0.981 | ||
| No | 7 962 (60.4) | 9 161 (60.4) | |
| Yes | 5 226 (39.6) | 6 019 (39.6) | |
| Drinking /case (%) | 0.001 | ||
| No | 8 883 (67.4) | 9 858 (64.9) | |
| Less than 1 time/month | 1 049 (7.9) | 1 326 (8.7) | |
| More than once a month | 3 256 (24.7) | 3 996 (26.4) | |
| Sleeping time/case (%) | 0.293 | ||
| <6 h | 3858 (29.3) | 4369 (28.8) | |
| 6-9 h | 8 751 (66.3) | 10 187 (67.1) | |
| >9 h | 579 (4.4) | 624 (4.1) | |
| Self-rated health/case (%) | <0.001 | ||
| Very good | 784 (5.9) | 1 860 (12.2) | |
| good | 2 238 (17.0) | 1 891 (12.5) | |
| Fair | 6 882 (51.7) | 8 013 (52.8) | |
| Poor | 2832 (21.5) | 2701 (17.8) | |
| Very poor | 522 (3.9) | 715 (4.7) | |
| Wearing glasses/case (%) | 0.985 | ||
| No | 11 692 (88.7) | 11 039 (88.9) | |
| Yes | 1 432 (10.8) | 4 105 (10.6) | |
| Blindness | 64 (0.5) | 36 (0.5) | |
| Hearing/case (%) | <0.001 | ||
| Excellent | 184 (1.4) | 327 (2.2) | |
| Very good | 1 776 (13.5) | 2 498 (16.5) | |
| good | 3 863 (29.3) | 2 546 (16.8) | |
| Fair | 5 531 (41.9) | 7 945 (52.3) | |
| Poor | 1 834 (13.9) | 1 864 (12.3) | |
| fall(s) (last year)/case (%) | 0.035 | ||
| No | 11 058 (83.9) | 12 586 (82.9) | |
| Yes | 203 (16.1) | 2 594 (17.1) | |
| Pain/case (%) | <0.001 | ||
| No | 8 821 (66.9) | 10 606 (69.9) | |
| Yes | 4 367 (33.1) | 4 574 (30.1) | |