Table 2.
Odds ratios of disease prevalence according to duration of breast feeding
| Variable | Duration of breast feeding (mo) |
P for trend | |||
|---|---|---|---|---|---|
| 0–18 | 19–36 | 37–72 | >72 | ||
| Sarcopenia | |||||
| Unadjusted | 1 | 0.93 (0.53–1.64) | 0.80 (0.46–1.40) | 0.72 (0.42–1.24) | <0.001 |
| Model 1 | 1 | 1.01 (0.54–1.89) | 0.60 (0.32–1.12) | 0.34 (0.17–0.68) | <0.001 |
| Model 2 | 1 | 1.14 (0.60–2.19) | 0.63 (0.30–1.30) | 0.38 (0.16–0.89) | 0.002 |
| Model 3 | 1 | 0.82 (0.42–1.60) | 0.42 (0.20–0.87) | 0.27 (0.11–0.65) | <0.001 |
| Osteoporosis | |||||
| Unadjusted | 1 | 1.17 (0.64–2.16) | 1.87 (1.08–3.22) | 2.99 (1.70–5.27) | <0.001 |
| Model 1 | 1 | 1.24 (0.62–2.51) | 1.44 (0.74–2.80) | 1.19 (0.59–2.40) | 0.89 |
| Model 2 | 1 | 1.28 (0.62–2.64) | 1.37 (0.67–2.80) | 1.29 (0.61–2.73) | 0.71 |
| Model 3 | 1 | 1.18 (0.55–2.53) | 1.24 (0.60–2.58) | 1.19 (0.55–2.58) | 0.81 |
| Obesity | |||||
| Unadjusted | 1 | 1.28 (0.79–2.10) | 1.21 (0.79–1.85) | 1.15 (0.74–1.78) | 0.92 |
| Model 1 | 1 | 1.68 (0.99–2.83) | 1.75 (1.07–2.87) | 2.33 (1.41–3.86) | 0.002 |
| Model 2 | 1 | 1.70 (0.97–2.96) | 1.67 (0.98–2.85) | 2.22 (1.28–3.85) | 0.01 |
| Model 3 | 1 | 1.94 (1.10–3.43) | 1.99 (1.14–3.48) | 2.56 (1.43–4.60) | 0.009 |
Values are presented as odds ratios (95 % confidence intervals). Model 1: adjusted for age, alcohol, smoking, and physical activity; model 2: adjusted for variables considered in model 1+body mass index, level of education, and house income; and model 3: adjusted for variables considered in model 2+total energy intake per day, total protein intake per day, duration after menopause, and oral contraceptive use.