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Table 4 Multivariate models predicting case-control status at each reported age group

From: Connecting the dots between breast cancer, obesity and alcohol consumption in middle-aged women: ecological and case control studies

Model* Odds Ratio (95% CI) Risk difference (95% CI) p-value*
Aged 18 to 30 years (n = 170):
 Above median standard drinks per month (> 19) 0.83 (0.41–1.66) − 0.04 (− 0.17–0.09) 0.513
 Obese (BMI ≥ 30) 0.69 (0.07–6.28) − 0.05 (− 0.36–0.27) 0.738
 Above median number stressful life events (> 1) 0.78 (0.37–1.63) −0.03 (− 0.06–0.10) 0.508
 Smoking 0.73 (0.36–1.49) −0.06 (− 0.20–0.07) 0.382
 Low activity level 0.84 (0.35–2.06) −0.05 (− 0.20–0.11) 0.708
Aged 31 to 40 years (n = 205):
 Above median standard drinks per month (> 16) 0.58 (0.28–1.16) −0.09 (− 0.20–0.02) 0.123
 Obese (BMI ≥ 30) 3.47 (1.28–9.42) 0.25 (0.03–0.47) 0.015
 Above median number stressful life events (> 1) 0.76 (0.38–1.50) −0.03 (− 0.14–0.08) 0.425
 Smoking 0.82 (0.35–1.91) −0.03 (− 0.17–0.10) 0.652
 Low activity level 0.68 (0.31–1.50) −0.06 (− 0.18–0.05) 0.341
Aged 41 to 50 years (n = 225):
 Above median standard drinks per month (> 16) 0.81 (0.42–1.53) −0.03 (− 0.14–0.08) 0.511
 Obese (BMI ≥ 30) 1.11 (0.46–2.65) 0.02 (− 0.15–0.18) 0.822
 Above median number stressful life events (> 2) 0.97 (0.52–1.83) 0.00 (−0.11–0.11) 0.932
 Smoking 0.59 (0.22–1.58) −0.10 (− 0.30–0.11) 0.291
 Low activity level 1.14 (0.58–2.24) 0.02 (− 0.10–0.14) 0.711
Aged 51 to 60 years (n = 163):
 Above median standard drinks per month (> 16) 0.81 (0.37–1.81) − 0.04 (− 0.16–0.08) 0.614
 Obese (BMI ≥ 30) 0.56 (0.19–1.66) −0.07 (− 0.21–0.07) 0.293
 Above median number stressful life events (> 1) 1.28 (0.57–2.85) 0.03 (− 0.09–0.15) 0.552
 Smoking 0.54 (0.17–13.61) 0.07 (−0.16–0.30) 0.697
 Low activity level 1.72 (0.70–4.32) 0.07 (− 0.07–0.22) 0.239
Aged 61 to 70 years (n = 86):**
 Above median standard drinks per month (> 20) 0.28 (0.06–1.20) −0.16 (− 0.33–0.02) 0.085
 Obese (BMI ≥ 30) 0.73 (0.10–5.41) −0.04 (− 0.25–0.18) 0.760
 Above median number stressful life events (> 0) 0.98 (0.24–4.04) −0.02 (− 0.18–0.14) 0.980
 Low activity level 0.67 (0.10–4.44) −0.01 (− 0.19 – − 0.19) 0.679
  1. *Log binomial models used
  2. **smoking omitted due to low cell counts (2 smokers only)
  3. Significant results (p < 0.05) in bold