Table 1 Distribution of selected characteristics of 3956 Japanese females
Variable | Number (%) |
|---|---|
Age (y) | 18.1 (0.4) |
Cigarette smoking | |
Never | 3828 (96.8) |
Ever | 128 (3.2) |
Toothbrushing frequency (times/day) | |
1 or less | 484 (12.2) |
2 | 2899 (73.3) |
3+ | 573 (14.5) |
Region of residence | |
Hokkaido and Tohoku | 332 (8.4) |
Kanto | 1322 (33.4) |
Hokuriku and Tokai | 637 (16.1) |
Kinki | 837 (21.2) |
Chugoku and Shikoku | 452 (11.4) |
Kyushu | 376 (9.5) |
Body Mass Index (kg/m2) | |
< 18.5 | 582 (14.7) |
18.5–24.9 | 3078 (77.8) |
25.0–29.9 | 244 (6.2) |
30+ | 52 (1.3) |