Table 4. Crude and Adjusted Odds Ratios for Selected Nonmelanoma Skin Cancer Risk Factors in Women.
| Risk Factor | No. (%) | P Value | Odds Ratio (95% CI) | ||
|---|---|---|---|---|---|
| Cases | Controls | Crude | Adjusteda | ||
| Age, mean (SD) | 68 (11) | 64 (10) | .07 | 1.04 (1.00-1.09) | 1.07 (1.01-1.14) |
| Skin color | |||||
| Light | 25 (87) | 28 (53) | .002 | 5.80 (1.78-18.93) | 8.43 (1.70-41.86) |
| Dark | 4 (14) | 26 (48) | 1.0 [Reference] | 1.0 [Reference] | |
| Tan score | |||||
| Moderate/poor | 19 (66) | 31 (58) | .47 | 1.41 (0.55-3.60) | 0.33 (0.07-1.47) |
| Good | 10 (35) | 23 (43) | 1.0 [Reference] | 1.0 [Reference] | |
| No. of severe sunburns | |||||
| ≥4 | 24 (83) | 27 (50) | .004 | 4.80 (1.60-14.44) | 8.00 (2.01-31.84) |
| <4 | 5 (17) | 27 (50) | 1.0 [Reference] | 1.0 [Reference] | |
a
Adjusted for other factors in the logistic model (C statistic of 0.807 for the whole model).