Table 1 Characteristics of participants in 2006 and 2008
2006 (n = 4456) | 2008 (n = 2184) | ||
|---|---|---|---|
Mean ± Deviation | Mean ± Deviation | χ2, p value | |
Age (years) | 46.8 ± 9.5 | 46.8 ± 9.4 | 0.1, 0.952 |
BMI (kg/m2) | 22.1 ± 3.7 | 22.1 ± 3.9 | 0.2, 0.847 |
No.[%] | No.[%] | t, p value | |
Gender | 1.8, 0.175 | ||
Men | 1846 [41.4] | 943 [43.2] | |
Women | 2610 [58.6] | 1241 [56.8] | |
Education | 3.6, 0.057 | ||
Middle school or above | 1703 [38.4] | 887 [40.8] | |
Below middle school | 2731 [61.6] | 1285 [59.2] | |
Household income level | 49.5, <0.001 | ||
Low | 492 [11.1] | 377 [17.3] | |
Medium | 3314 [74.6] | 1514 [69.4] | |
High | 634 [14.3] | 289 [13.3] | |
Occupation | 53.3, <0.001 | ||
Famer | 3206 [72.4] | 1753 [80.7] | |
Non-famer | 1222 [27.6] | 420 [19.3] | |
Smoking | 11.7, <0.001 | ||
Yes | 1227 [27.6] | 690 [31.7] | |
NO | 3216 [72.4] | 1489 [68.3] | |
Alcohol use | 17.3, <0.001 | ||
Yes | 938 [21.1] | 559 [25.6] | |
NO | 3518 [78.9] | 1625 [74.4] | |
Physical exercise | 2.4, 0.125 | ||
Yes | 93 [2.2] | 59 [2.8] | |
NO | 4125 [97.8] | 2022 [97.2] | |
Dietary chief component | 18.7, <0.001 | ||
Vegetable | 622 [14.0] | 391 [18.0] | |
Meat | 314 [7.1] | 160 [7.4] | |
Vegetable and Meat | 3493 [78.9] | 1617 [74.6] |