From: Cytochrome P450 1A2 (CYP1A2) activity and risk factors for breast cancer: a cross-sectional study
Variable | β (SE) | F | P | Quartiles (mean CMR [95% confidence interval]) | P for trend | |||
---|---|---|---|---|---|---|---|---|
 |  |  |  | Q1 | Q2 | Q3 | Q4 |  |
Age (years) | 0.001 (0.007) | 0.01 | 0.93 | Â | Â | Â | Â | Â |
Age at first birth (years)2 | 0.16 (0.21) | 0.56 | 0.46 | Â | Â | Â | Â | Â |
Age at menarche (years) | 0.03 (0.03) | 1.80 | 0.18 | 6.11 (5.12–7.29) | 6.55 (5.49–7.81) | 7.39 (5.84–9.35) | 6.62 (5.03–8.71) | 0.16 |
BMI (kg/m2)2 | -0.43 (0.19) | 5.05 | 0.03 | 7.76 (6.32–9.53) | 6.11 (5.09–7.33) | 6.17 (5.02–7.57) | 6.16 (4.89–7.76) | 0.04 |
WHR | 1.26 (0.70) | 3.23 | 0.07 | 5.89 (4.80–7.24) | 6.01 (4.90–7.37) | 6.46 (5.31–7.86) | 7.20 (5.87–8.83) | 0.06 |
Caffeine (mg/day)1 | 0.020 (0.007) | 6.32 | 0.01 | 5.42 (4.49–6.54) | 6.37 (5.29–7.68) | 6.28 (5.17–7.64) | 6.94 (5.84–8.24) | 0.02 |
Alcohol (kcal/day)2 | 0.03 (0.02) | 2.13 | 0.15 | 5.17 (4.33–6.16) | 5.17 (4.29–6.23) | 5.88 (4.85–7.12) | 6.12 (5.03–7.45) | 0.05 |
Cholesterol (mg/day)2 | 0.09 (0.08) | 1.29 | 0.26 | Â | Â | Â | Â | Â |
Total energy (kcal/day)1 | 0.01 (0.01) | 6.05 | 0.02 | 5.73 (4.70–6.98) | 6.18 (5.00–7.64) | 6.58 (5.46–7.93) | 6.81 (5.56–8.33) | 0.06 |
Carbohydrate (g/day)1 | 0.02 (0.02) | 2.26 | 0.14 | 5.87 (4.84–7.13) | 6.75 (5.51–8.26) | 6.30 (5.13–7.74) | 6.63 (5.45–8.07) | 0.34 |
Fat intake (g/day)1 | 0.05 (0.02) | 4.33 | 0.04 | 6.04 (5.20–7.01) | 6.94 (5.98–8.05) | 6.38 (5.46–7.45) | 7.01 (6.03–8.15) | 0.25 |
Protein intake (g/day)2 | 0.29 (0.11) | 7.81 | 0.006 | 6.01 (4.97–7.27) | 6.74 (5.45–8.33) | 6.20 (5.08–7.55) | 6.93 (5.65–8.50) | 0.28 |
Total estradiol (pmol/l)3 | -0.001 (0.006) | 0.01 | 0.92 | Â | Â | Â | Â | Â |
Free estradiol (%)2 | -0.05 (0.01) | 11.02 | 0.001 | 6.62 (5.51–7.96) | 7.46 (6.16–9.04) | 5.99 (4.90–7.31) | 5.16 (4.19–6.35) | 0.007 |
SHBG (nmol/l)4 | 0.07 (0.02) | 10.89 | 0.001 | 5.13 (4.16–6.35) | 6.09 (4.96–7.46) | 7.57 (6.17–9.28) | 6.73 (5.64–8.03) | 0.004 |
Progesterone (nmol/l)1 | -0.01 (0.02) | 0.40 | 0.53 | Â | Â | Â | Â | Â |
FSH (IU/l)2 | 0.01 (0.04) | 0.01 | 0.91 | Â | Â | Â | Â | Â |
GH (μg/l)5 | 0.01 (0.03) | 0.14 | 0.71 |  |  |  |  |  |
IGF-1 (ng/ml)6 | 0.30 (0.22) | 1.73 | 0.19 | 5.59 (4.59–6.81) | 6.59 (5.38–8.06) | 7.63 (6.19–9.41) | 6.75 (5.41–8.43) | 0.07 |
IGFBP-3 (mg/l)7 | -0.14 (0.31) | 0.20 | 0.66 | Â | Â | Â | Â | Â |
Insulin (pmol/l)2 | 0.24 (0.09) | 6.91 | 0.01 | 5.44 (4.51–6.57) | 5.52 (4.49–6.78) | 7.16 (5.91–8.68) | 7.61 (6.19–9.37) | 0.0009 |
Total cholesterol (mmol/l)2 | -0.74 (0.20) | 13.84 | 0.0003 | 7.37 (5.93–9.17) | 6.88 (5.71–8.28) | 6.24 (5.14–7.58) | 5.64 (4.62–6.89) | 0.006 |
LDL-cholesterol (mmol/l)2 | -0.44 (0.15) | 8.82 | 0.004 | 7.28 (5.91–8.96) | 6.77 (5.60–8.19) | 6.67 (5.54–8.04) | 5.24 (4.30–6.39) | 0.004 |
HDL-cholesterol (mmol/l)2 | -0.27 (0.15) | 3.35 | 0.07 | 7.05 (5.76–8.63) | 6.17 (5.06–7.52) | 6.83 (5.60–8.32) | 5.83 (4.79–7.09) | 0.11 |
Triglycerides (mmol/l)2 | -0.02 (0.07) | 0.04 | 0.83 | Â | Â | Â | Â | Â |