Table 1 Characteristics of the study population by the household income level (N = 7410)
Characteristics | Total, n (%) | Low-income household, n (%) | P-value | Â | ||||
|---|---|---|---|---|---|---|---|---|
Yes (n = 1482) |  | No (n = 5928) | ||||||
Age, yrs, mean (SD) | 3.03 (1.59) | 3.03 (1.59) |  | 3.03 (1.59) | > 0.999 |  | ||
Male gender | 3840 (51.8) | 768 (51.8) |  | 072 (51.8) | > 0.999 |  |  | |
Mother’s nationality |  |  |  |  | ||||
 Taiwanese | 7116 (96.0) | 1335 (90.1) |  | 5781 (97.5) | < 0.001 |  | ||
 Foreigners | 294 (4.0) | 147 (9.9) |  | 147 (2.5) |  |  | ||
Baseline BMI, Kg/m2, mean (SD) | 16.21 (1.82) | 16.48 (2.06) |  | 16.15 (1.75) 1.88 (3.01) | < 0.001 |  | ||
Baseline dmft indexa, mean (SD) | 2.13 (3.27) | 3.12 (3.98) |  | < 0.001 |  | |||
Spectacle wear | 467 (6.3) | 112 (7.6) | Â | 355 (6.0) | 0.026 | Â | ||
Overweight/Obesity on the first examination | 1702 (23.0) | 430 (29.0) |  | 1272 (21.5) | < 0.001 |  | ||
Overweight/Obesity on the last examination | 1782 (24.1) | 452 (30.5) |  | 1330 (22.4) | < 0.001 |  | ||
Follow-up years, mean (SD) | 2.85 (1.70) | 2.83 (1.63) | Â | 2.86 (1.71) | 0.745 | Â | ||