Table 2 Distribution of selected characteristic in 1, 975 children
Low birth weight | Normal birth weight | Total | ||||||
|---|---|---|---|---|---|---|---|---|
Category | (n) | % | (n) | % | (n) | % | P | |
Variable | ||||||||
Total | 128 | 6.5 | 1847 | 93.5 | 1975 | 100 | ||
Sex | Female | 61 | 47.7 | 901 | 48.8 | 962 | 48.1 | .805 |
Male | 67 | 52.3 | 946 | 51.2 | 1013 | 51.3 | ||
Paternal educational level (years) | < 9 | 47 | 36.7 | 745 | 40.3 | 792 | 40.1 | .407 |
9-12 | 45 | 35.2 | 546 | 29.6 | 591 | 29.9 | ||
> 12 | 36 | 28.1 | 556 | 30.1 | 592 | 30.0 | ||
maternal exposure to tobacco smoke during pregnancy | Active smoking | 0 | 0.0 | 16 | 0.8 | 16 | 0.8 | <.001 |
Passive smoking | 62 | 48.4 | 141 | 7.6 | 203 | 10.3 | ||
No smoking | 66 | 51.6 | 1690 | 91.5 | 1756 | 88.9 | ||
The frequency of sugary food intake (times/day) | < 1 | 90 | 70.3 | 1286 | 69.6 | 1376 | 69.7 | .782 |
1-2 | 28 | 21.9 | 383 | 20.7 | 411 | 20.8 | ||
> 2 | 10 | 7.8 | 178 | 9.6 | 188 | 9.5 | ||
Age at first brushing (years old) | 2 | 29 | 22.7 | 480 | 26.0 | 509 | 25.8 | .065 |
3 | 35 | 27.3 | 635 | 34.4 | 670 | 33.9 | ||
> 3 | 64 | 50.0 | 732 | 39.6 | 796 | 40.3 | ||
Toothbrushing frequency (times/day) | 0 | 1 | 1.0 | 18 | 1.0 | 19 | 1.0 | .398 |
1 | 38 | 21.9 | 450 | 24.4 | 488 | 24.7 | ||
> 2 | 89 | 60.5 | 1379 | 74.7 | 1468 | 74.3 | ||
Dental check-ups (times/year) | 0 | 38 | 30.0 | 476 | 25.8 | 514 | 26.0 | .583 |
1 | 57 | 44.5 | 842 | 45.6 | 899 | 45.5 | ||
2 | 33 | 25.8 | 529 | 28.6 | 562 | 28.5 | ||
Fluoride use | 53 | 41.4 | 1016 | 55.0 | 1069 | 54.1 | .003 | |