Table 1 Characteristics of sample in 2011 and 2015
| Â | Â | 2011 | Â | Â | 2015 | Â |
|---|---|---|---|---|---|---|
| Â | N | Unweighted % | Weighted % | N | Unweighted % | Weighted % |
Total | 5321 | 100.0 | 100.0 | 5321 | 100.0 | 100.0 |
Age (year) | ||||||
 45–54 | 2073 | 39.0 | 40.2 | 1350 | 25.4 | 26.1 |
 55–64 | 2055 | 38.6 | 37.1 | 2074 | 39.0 | 38.1 |
 65–74 | 946 | 17.8 | 17.6 | 1387 | 26.1 | 25.3 |
 75 and above | 247 | 4.6 | 5.1 | 510 | 9.6 | 10.5 |
Gender | ||||||
 Male | 2411 | 45.3 | 45.0 | 2411 | 45.3 | 45.2 |
 Female | 2910 | 54.7 | 55.0 | 2910 | 54.7 | 54.8 |
Marital status | ||||||
 Married and partnered | 4758 | 89.4 | 88.2 | 4594 | 86.3 | 85.2 |
 Unmarried and other | 563 | 10.6 | 11.8 | 727 | 13.7 | 14.8 |
Education status | ||||||
 Pre-primary | 2399 | 45.1 | 42.9 | 2399 | 45.1 | 42.3 |
 Primary school | 1202 | 22.6 | 22.5 | 1202 | 22.6 | 22.1 |
 Secondary school | 1126 | 21.2 | 22.5 | 1126 | 21.2 | 22.9 |
 College and above | 594 | 11.2 | 12.0 | 594 | 11.2 | 12.7 |
Residence place | ||||||
 Urban | 1950 | 36.7 | 42.3 | 1950 | 36.7 | 43.0 |
 Rural | 3371 | 63.4 | 57.7 | 3371 | 63.4 | 57.0 |
Region | ||||||
 East | 2042 | 38.4 | 40.8 | 2042 | 38.4 | 40.4 |
 Central | 1934 | 36.4 | 34.2 | 1934 | 36.4 | 35.7 |
 West | 1345 | 25.3 | 25.1 | 1345 | 25.3 | 24.0 |
Social health insurance | ||||||
 No | 352 | 6.6 | 6.6 | 496 | 9.3 | 9.5 |
 Yes | 4969 | 93.4 | 93.4 | 4825 | 90.7 | 90.5 |
BMI | ||||||
 Normal | 3358 | 63.1 | 63.5 | 3211 | 60.4 | 60.8 |
 Underweight | 292 | 5.5 | 5.5 | 324 | 6.1 | 6.1 |
 Overweight | 1431 | 26.9 | 26.5 | 1531 | 28.8 | 28.5 |
 Obesity | 240 | 4.5 | 4.6 | 255 | 4.8 | 4.6 |
Depression | ||||||
 No | 3386 | 63.6 | 64.9 | 3465 | 65.1 | 66.3 |
 Yes | 1935 | 36.4 | 35.1 | 1856 | 34.9 | 33.7 |
Physical activity | ||||||
 Low | 2082 | 39.1 | 41.7 | 2253 | 42.3 | 45.3 |
 Moderate | 1381 | 26.0 | 25.9 | 1336 | 25.1 | 24.4 |
 High | 1858 | 34.9 | 32.4 | 1732 | 32.6 | 30.3 |
Sleep duration | ||||||
 Poor (< 7 h or > 9 h) | 1746 | 32.8 | 32.4 | 1978 | 37.2 | 36.4 |
 Good [7 h–9 h] | 3575 | 67.2 | 67.6 | 3343 | 62.8 | 63.6 |
Multimorbidity | ||||||
 No | 2464 | 46.3 | 47.8 | 1912 | 35.9 | 37.2 |
 Yes | 2857 | 53.7 | 52.2 | 3409 | 64.1 | 62.8 |