Table 1.
Characteristic | NMSC cases % (n = 900) |
Controls % (n = 900) |
P2 |
---|---|---|---|
Age at baseline3 Mean +/− SD ≤34 35–44 45–54 55–64 65–74 ≥75 |
59.7 +/− 13.0 4.4 9.4 18.4 27.7 27.6 12.4 |
56.6 +/− 13.1 5.9 13.8 19.7 31.0 24.0 5.7 |
<0.01 |
Gender Male Female |
46.3 53.7 |
46.3 53.7 |
1.0 |
Education3 Mean +/− SD <12 years 12 years >12 years |
12.1 +/− 3.0 27.9 41.7 30.4 |
12.4 +/− 2.9 26.0 41.1 32.9 |
0.48 |
Body Mass Index3 Mean +/− SD <18.5 18.5 – 24.9 25.0 – 29.9 ≥30.0 |
25.9 +/− 4.3 1.3 42.9 41.0 14.8 |
26.2 +/− 4.6 0.8 41.8 40.2 17.2 |
0.36 |
Cigarette Smoking† Never Former Current |
51.1 35.0 13.9 |
43.0 30.7 26.3 |
<0.01 |
Skin Type4 Blistering burn Burn without blisters Burn that tans Tan without burn No change Missing |
14.5 34.0 38.0 10.2 3.3 (n = 479) |
14.5 31.6 40.4 10.9 2.6 (n = 479) |
0.89 |
Basal Cell Carcinoma 1 >1 Squamous Cell Carcinoma 1 >1 |
65.5 34.5 61.2 38.8 |
-- -- -- -- |
Controls were matched on age (+/− 5 years, +/− 10 years for those ≥75), gender, and skin type. 13 cases were matched to controls with skin type off by one category.
Chi Squared test
Measured at baseline in 1989
Measured in 2003 and 2007