Variable | Category | Na | The number of present teeth (Mean ± SD, p-value†) | |||||
---|---|---|---|---|---|---|---|---|
Total women | Women aged 50–64 years | Women aged 65 years or above | ||||||
Menarche age (years) | under 14 | 481 | 19.8 ± 0.7 | 0.24 | 24.3 ± 0.5 | 0.10 | 15.0 ± 1.3 | 0.29 |
15–16 | 822 | 19.5 ± 0.4 | 24.0 ± 0.4 | 15.3 ± 0.6 | ||||
17+ | 802 | 18.7 ± 0.4 | 23.6 ± 0.6 | 14.0 ± 0.6 | ||||
Menarche agea age_I | 0.68 | 0.10 | 0.18 | |||||
Duration of menopause (years) | under 3 | 544 | 25.4 ± 0.3 | <0.01 | 24.0 ± 0.6 | 0.07 | – | 0.15 |
4–9 | 792 | 22.0 ± 1.0 | 24.2 ± 0.3 | 14.1 ± 2.9 | ||||
10–14 | 622 | 22.1 ± 0.4 | 24.1 ± 0.5 | 16.8 ± 1.6 | ||||
15+ | 1,874 | 18.1 ± 0.4 | 23.6 ± 1.1 | 15.1 ± 0.3 | ||||
Duration of menopausea age_I | <0.01 | 0.35 | 0.90 | |||||
Number of pregnancies | under 3 | 1,049 | 20.6 ± 0.5 | <0.01 | 24.4 ± 0.3 | 0.39 | 16.0 ± 0.8 | 0.97 |
4–6 | 1,964 | 19.3 ± 0.3 | 24.1 ± 0.2 | 14.5 ± 0.4 | ||||
7+ | 960 | 18.9 ± 0.4 | 23.6 ± 0.6 | 15.3 ± 0.5 | ||||
Number of pregnanciesa age_I | 0.59 | 0.63 | 0.40 | |||||
Age at first child’s birth (years) | under 19 | 411 | 17.5 ± 0.5 | <0.01 | 23.2 ± 0.7 | 0.43 | 14.1 ± 0.9 | <0.01 |
20–24 | 2,176 | 19.2 ± 0.3 | 23.8 ± 0.3 | 14.6 ± 0.4 | ||||
25+ | 1,305 | 21.6 ± 0.3 | 24.4 ± 0.3 | 16.6 ± 0.6 | ||||
Age at first child’s birtha age_I | <0.01 | 0.50 | 0.10 | |||||
Duration of taking oral contraceptives (months) | Not taking | 1,740 | 19.0 ± 0.3 | <0.05 | 24.0 ± 0.3 | 0.18 | 14.5 ± 0.5 | 0.12 |
under 6 | 319 | 21.0 ± 0.7 | 24.0 ± 0.6 | 17.2 ± 1.7 | ||||
7–18 | 212 | 20.9 ± 0.7 | 23.3 ± 0.9 | 16.3 ± 1.3 | ||||
19+ | 1,698 | 19.6 ± 0.3 | 24.3 ± 0.3 | 15.1 ± 0.4 | ||||
Duration of taking oral contraceptivesa age_I | <0.01 | 0.08 | 0.48 | |||||
Duration of taking female hormone drugs(years) | Not taking | 1,903 | 18.8 ± 0.3 | <0.01 | 23.7 ± 0.3 | <0.01 | 14.3 ± 0.4 | <0.01 |
under 1 | 304 | 24.1 ± 0.5 | 25.2 ± 0.3 | 20.3 ± 2.1 | ||||
more than 1 | 1,771 | 19.7 ± 0.3 | 24.2 ± 0.3 | 15.2 ± 0.5 | ||||
Duration of taking female hormone drugsa age_I | <0.01 | 0.07 | 0.64 | |||||
Calcium intake | Q1 | 998 | 17.7 ± 0.4 | <0.01 | 22.9 ± 0.5 | 0.11 | 13.2 ± 0.6 | <0.05 |
Q2 | 998 | 20.0 ± 0.4 | 24.4 ± 0.3 | 15.8 ± 0.6 | ||||
Q3 | 998 | 20.5 ± 0.4 | 24.0 ± 0.3 | 16.4 ± 0.6 | ||||
Q4 | 998 | 20.2 ± 0.3 | 24.6 ± 0.3 | 15.2 ± 0.6 | ||||
Calcium intakea age_I | <0.05 | 0.18 | 0.55 |