Table 4.
Prevalence and odds ratios (and 95% Confidence Intervals) for the associations between phenotypic skin cancer risk factors and skin cancer prevention behaviors among females, Washington County, MD 2007.
| Phenotypic Factor | Regular sunscreen use | Regular sun-protective clothing use | ||||||
|---|---|---|---|---|---|---|---|---|
| % | OR (95% CI) | OR (95% CI)† | OR (95% CI)†‡ | % | OR (95% CI) | OR (95% CI)† | OR (95% CI)†‡ | |
| Skin reaction to sunlight | ||||||||
| Blistering sunburn | 45.3* | 4.30 (3.04 – 6.08) | 4.89 (3.34 – 7.16) | 3.98 (2.82 – 5.62) | 39.9* | 5.69 (3.85 – 8.39) | 4.44 (2.88 – 6.85) | 3.51 (2.43 – 5.09) |
| Sunburn without blisters | 35.0 | 2.80 (2.13 – 3.69) | 2.79 (2.08 – 3.76) | 2.47 (1.89 – 3.24) | 20.3 | 2.20 (1.58 – 3.06) | 1.93 (1.34 – 2.78) | 1.63 (1.20 – 2.22) |
| Mild sunburn that becomes a tan | 26.0 | 1.81 (1.38 – 2.37) | 1.73 (1.30 – 2.30) | 1.77 (1.36 – 2.30) | 12.6 | 1.23 (0.88 – 1.72) | 1.29 (0.90 – 1.85) | 1.27 (0.94 – 1.73) |
| Tan or darken with no sunburn | 16.3 | 1.0 (referent) | 1.0 (referent) | 1.0 (referent) | 10.4 | 1.0 (referent) | 1.0 (referent) | 1.0 (referent) |
| No change in skin color | 12.5 | 0.80 (0.42 – 1.55) | 0.91 (0.45 – 1.83) | 0.95 (0.52 – 1.72) | 15.6 | 1.74 (0.93 – 3.30) | 1.54 (0.79 – 3.03) | 1.15 (0.65 – 2.05) |
| Complexion | ||||||||
| Very fair | 46.3* | 4.28 (2.69 – 6.81) | 3.87 (2.37 – 6.33) | 3.86 (2.46 – 6.06) | 39.8* | 7.35 (4.11 – 13.13) | 5.51 (2.94 – 10.35) | 4.58 (2.68 – 7.82) |
| Fair | 34.4 | 2.63 (1.77 – 3.89) | 2.34 (1.56 – 3.53) | 2.22 (1.52 – 3.23) | 21.0 | 2.88 (1.71 – 4.87) | 2.51 (1.42 – 4.44) | 2.13 (1.32 – 3.44) |
| Medium | 24.1 | 1.58 (1.07 – 2.34) | 1.45 (0.97 – 2.19) | 1.60 (1.10 – 2.33) | 11.8 | 1.47 (0.86 – 2.49) | 1.41 (0.80 – 2.50) | 1.38 (0.86 – 2.23) |
| Light brown | 22.2 | 1.36 (0.79 – 2.34) | 1.32 (0.75 – 2.30) | 1.36 (0.81 – 2.27) | 12.4 | 1.50 (0.74 – 3.06) | 1.61 (0.76 – 3.42) | 1.77 (0.95 – 3.30) |
| Medium/dark brown | 16.2 | 1.0 (referent) | 1.0 (referent) | 1.0 (referent) | 8.8 | 1.0 (referent) | 1.0 (referent) | 1.0 (referent) |
| Facial freckling | ||||||||
| None | 25.4* | 1.0 (referent) | 1.0 (referent) | 1.0 (referent) | 16.4 | 1.0 (referent) | 1.0 (referent) | 1.0 (referent) |
| Small amount | 32.8 | 1.40 (1.22 – 1.61) | 1.20 (1.03 – 1.39) | 1.24 (1.08 – 1.42) | 17.1 | 1.03 (0.87 – 1.22) | 1.11 (0.92 – 1.33) | 1.10 (0.93 – 1.29) |
| Large amount/Almost all | 38.8 | 1.82 (1.34 – 2.48) | 1.51 (1.09 – 2.10) | 1.49 (1.17 – 1.90) | 20.2 | 1.30 (0.89 – 1.89) | 1.39 (0.94 – 2.06) | 1.30 (0.97 – 1.73) |
| Eye color | ||||||||
| Blue or green | 30.5 | 1.14 (1.00 – 1.31) | 1.18 (1.02 – 1.36) | 1.12 (0.98 – 1.27) | 18.4 | 1.20 (1.02 – 1.41) | 1.18 (0.99 – 1.40) | 1.18 (1.01 – 1.37) |
| Other color | 27.8 | 1.0 (referent) | 1.0 (referent) | 1.0 (referent) | 15.7 | 1.0 (referent) | 1.0 (referent) | 1.0 (referent) |
†
Odds Ratio with 95% Confidence Interval. Adjusted for age, years of education, race, smoking, BMI, days of exposure, history of blistering sunburns, hours of midday exposure, and personal and family history of skin cancer
‡
Multiple imputations used to estimate missing data values
*
p for trend <0.05