Table 5 Adjusted odds ratio (95% CIs) of cervical cancer for quartiles of serum antioxidant vitamin concentrations by passive-smoking status in Chinese women.
Quartiles of serum antioxidant vitamin concentrations | P-trend | P-interaction | ||||
|---|---|---|---|---|---|---|
Q1 | Q2 | Q3 | Q4 | |||
Serum retinol | 0.002 | |||||
N (case/control) | 76/63 | 59/62 | 46/63 | 48/63 | ||
Passive smokers | 1.00 | 0.88 (0.55, 1.40) | 0.59 (0.36, 0.95) | 0.46 (0.28, 0.76) | 0.001 | |
N (case/control) | 55/119 | 57/119 | 56/119 | 60/119 | ||
Non-passive smokers | 1.00 | 0.96 (0.60, 1.54) | 1.04 (0.65, 1.67) | 1.28 (0.81, 2.03) | 0.249 | |
Serum α-carotene | 0.222 | |||||
N (case/control) | 67/62 | 66/63 | 54/63 | 33/63 | ||
Passive smokers | 1.00 | 0.91 (0.57, 1.44) | 0.78 (0.48, 1.26) | 0.47 (0.28, 0.79) | 0.005 | |
N (case/control) | 58/119 | 64/119 | 61/119 | 45/119 | ||
Non-passive smokers | 1.00 | 1.13 (0.72, 1.78) | 1.02 (0.65, 1.61) | 0.76 (0.47, 1.24) | 0.241 | |
Serum β-carotene | 0.002 | |||||
N (case/control) | 95/63 | 54/63 | 34/62 | 37/63 | ||
Passive smokers | 1.00 | 0.54 (0.34, 0.87)) | 0.34 (0.21, 0.56) | 0.36 (0.21, 0.61) | <0.001 | |
N (case/control) | 60/119 | 66/119 | 52/119 | 50/119 | ||
Non-passive smokers | 1.00 | 1.07 (0.69, 1.66) | 0.86 (0.54, 1.36) | 0.96 (0.61, 1.51) | 0.637 | |
Serum vitamin E | 0.001 | |||||
N (case/control) | 105/63 | 46/62 | 44/63 | 25/63 | ||
Passive smokers | 1.00 | 0.44 (0.27, 0.70) | 0.40 (0.25, 0.65) | 0.27 (0.16, 0.46) | <0.001 | |
N (case/control) | 62/119 | 61/119 | 53/119 | 52/119 | ||
Non-passive smokers | 1.00 | 0.98 (0.63, 1.53) | 0.85 (0.54, 1.33) | 0.81 (0.52, 1.28) | 0.298 | |
Serum vitamin C | 0.004 | |||||
N (case/control) | 103/62 | 49/63 | 44/63 | 24/63 | ||
Passive smokers | 1.00 | 0.47 (0.30, 0.74) | 0.44 (0.27, 0.71) | 0.23 (0.13, 0.41) | <0.001 | |
N (case/control) | 64/119 | 65/119 | 51/119 | 48/119 | ||
Non-passive smokers | 1.00 | 1.01 (0.65, 1.56) | 0.78 (0.50, 1.21) | 0.72 (0.45, 1.14) | 0.096 | |
