| Socioeconomic status, scores |  | |||
---|---|---|---|---|---|
 | 1st | 2nd | 3rd | 4th |  |
 | Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD | p-value |
Number | 1325 | 1370 | 1753 | 1523 | Â |
Children | Â | Â | Â | Â | Â |
   Age, years | 10.0 ± 5.2 | 9.3 ± 5.1 | 8.9 ± 5.1 | 8.5 ± 5.2 | < 0.0001 |
   Body mass index, kg/m2 | 18.5 ± 4.5 | 18.3 ± 4.3 | 18.0 ± 4.0 | 17.8 ± 3.9 | < 0.0001 |
   Use of traditional Chinese medicine, visits | 0.09 ± 0.53 | 0.06 ± 0.38 | 0.08 ± 0.41 | 0.12 ± 0.64 | 0.027 |
   Boys, % | 51.3 | 49.7 | 51.2 | 54.1 | 0.11 |
   Live in high urbanization, % | 14.8 | 14.4 | 16.6 | 27.2 | < 0.0001 |
   Use of traditional Chinese medicine, % | 4.3 | 3.6 | 4.9 | 5.9 | 0.024 |
   Use of allopathic medicine, % | 32.5 | 36.4 | 38.6 | 39.5 | 0.0005 |
Household leaders | Â | Â | Â | Â | Â |
   Age, years | 41.9 ± 11.1 | 38.0 ± 7.9 | 38.2 ± 7.4 | 39.2 ± 6.6 | < 0.0001 |
   Socioeconomic status, scores | 7.5 ± 1.6 | 10.5 ± 0.5 | 12.8 ± 0.8 | 18.9 ± 3.4 | < 0.0001 |
   Occupation, scores | 0.3 ± 0.5 | 0.9 ± 0.7 | 1.7 ± 0.9 | 2.6 ± 0.8 | < 0.0001 |
   Numbers of household leader's children | 2.5 ± 1.1 | 2.5 ± 1.0 | 2.4 ± 1.0 | 2.3 ± 1.1 | < 0.0001 |
   Education ≥ 13 years, % | 2.2 | 2.9 | 20.8 | 78.9 | < 0.0001 |
   Income 40,000-79.999 NTD, % | 6.0 | 26.4 | 57.1 | 67.3 | < 0.0001 |
   Smoking, % | 46.6 | 63.1 | 50.4 | 41.8 | < 0.0001 |
   Alcohol drinking, % | 37.4 | 46.1 | 41.6 | 41.6 | 0.0001 |
   Use of traditional Chinese medicine, % | 8.6 | 8.8 | 9.1 | 6.1 | 0.008 |