Table 1 Continuous predictors of breast cancer among premenopausal women in Nigeria, 1998–2000
From: Waist–hip ratio and breast cancer risk in urbanized Nigerian women
Predictor | Cases | Controls | Odds ratio | 95% confidence interval | P value |
|---|---|---|---|---|---|
Age (years) | 38.34 (6.55) | 34.23 (8.80) | 1.07 | 1.04–1.10 | <0.01 |
Total number of pregnancies | 4.41 (2.29) | 3.82 (2.69) | 0.90 | 0.79–1.03 | 0.13 |
Age at menarche (years) | 15.01 (1.88) | 15.51 (2.30) | 0.86 | 0.77–0.97 | 0.01 |
Age at first full-term pregnancy (years) | 23.80 (4.30) | 22.54 (3.70) | 1.09 | 1.02–1.16 | 0.01 |
Height (cm) | 160.50 (8.62) | 159.38 (7.17) | 1.03 | 1.00–1.07 | 0.07 |
Weight (kg) | 64.25 (14.51) | 65.52 (15.28) | 1.01 | 0.99–1.03 | 0.19 |
Body mass index (weight/height2) | 24.76 (5.55) | 23.65 (4.85) | 1.02 | 0.97–1.07 | 0.54 |
Waist circumference (cm) | 80.60 (11.84) | 77.56 (10.73) | 1.01 | 0.99–1.04 | 0.28 |
Hip circumference (cm) | 99.03 (14.89) | 97.07 (11.07) | 1.01 | 0.99–1.02 | 0.61 |