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Table 4 Continuous predictors of breast cancer among postmenopausal 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) 53.62 (9.55) 58.42 (7.92) 0.939 0.09–0.97 0.01
Total number of pregnancies 5.99 (2.21) 6.75 (2.24) 0.89 0.71–1.02 0.10
Age at menarche (years) 15.58 (2.11) 16.35 (2.72) 0.89 0.78–1.02 0.08
Age at first full-term pregnancy (years) 23.34 (4.23) 22.99 (4.20) 0.98 0.92–1.06 0.65
Age at onset of natural menopause (years) 47.37 (6.49) 50.02 (5.59) 0.97 0.91–1.03 0.35
Height (cm) 159.37 (6.66) 155.99 (9.33) 1.07 1.02–1.13 0.01
Weight (kg) 65.52 (15.28) 62.32 (13.66) 1.02 1.00–1.04 0.07
Body mass index (weight/height2) 25.71 (5.86) 25.39 (5.63) 1.02 0.97–1.08 0.48
Waist (cm) 86.11 (14.18) 83.28 (10.36) 1.01 1.00–1.05 0.03
Hip (cm) 102.31 (17.05) 102.88 (16.93) 1.00 0.98–1.02 0.93
  1. Data presented as mean (standard deviation), age-adjusted odds ratio, 95% confidence interval, and P value for cases and controls.