Table 1

Demographic, lifestyle, and skin cancer risk factors in BCC and SCC cases and controls
Controls (n = 316) BCC (n=218) SCC (n = 169)
Variable n (%) n (%) p-value1 n (%) p-value1
Age mean (S.D.) 55.6 (11.8) 62.8 (11.9) <.0001 64.8 (9.6) <.0001
Age (years)
18–29 9 (2.9) 1 (0.5) <.0001 1 (0.6) <.0001
30–39 21 (6.7) 6 (2.8) 2 (1.2)
40–49 55 (17.4) 24 (11.0) 10 (5.9)
50–59 109 (34.5) 46 (21.1) 30 (17.8)
60–69 88 (27.9) 64 (29.4) 68 (40.2)
70–80 34 (10.8) 77 (35.3) 58 (34.3)
Gender
Male 117 (37.0) 133 (61.0) <.0001 108 (63.9) <.0001
Female 199 (63.0) 85 (39.0) 61 (36.1)
Ethnicity
Non-Hispanic 280 (88.6) 208 (95.4) 0.003 161 (95.3) 0.0003
Hispanic 32 (10.1) 7 (3.2) 2 (1.2)
Education
≤12 years 32 (10.1) 46 (21.1) 0.0004 36 (21.3) 0.001
>12 years 280 (88.6) 168 (77.1) 129 (76.3)
Smoked 100 cigarettes
Never 161 (50.9) 81 (37.2) 0.002 51 (30.2) <.0001
Ever 154 (48.7) 134 (61.5) 114 (67.5)
Alcohol consumption
≥ 1 drink in past year 274 (86.7) 177 (81.2) 0.09 130 (76.9) 0.02
No drinks in past year 40 (12.7) 39 (17.9) 35 (20.7)
Eye color
Blue 94 (29.7) 87 (40.0) 0.009 69 (40.8) 0.02
Green 50 (16.1) 24 (11.0) 25 (14.8)
Hazel 52 (16.5) 48 (22.0) 31 (18.3)
Light brown 36 (11.4) 22 (10.1) 18 (10.7)
Dark brown 80 (25.3) 35 (16.1) 22 (13.0)
Hair Color
Black/Brown 245 (77.5) 152 (69.7) 0.04 113 (66.9) 0.02
Blonde/Red 70 (22.2) 65 (29.8) 53 (31.4)
Color of un-tanned skin
White 299 (94.9) 209 (96.3) 0.38 161 (95.3) 0.55
Brown 15 (4.8) 7 (3.2) 6 (3.6)
Cutaneous sensitivity to sunlight exposure
Sunburn with blisters 29 (9.2) 33 (15.1) 0.0001 22 (13.0) 0.005
Sunburn w/o blisters 96 (30.4) 95 (43.6) 71 (42.0)
Mild sunburn/tan 144 (45.6) 65 (29.8) 50 (29.6)
Tan/no change color 44 (13.9) 21 (9.6) 22 (13.0)
Tanning ability to sunlight exposure
It is unable to tan 22 (7.0) 15 (6.9) 0.04 26 (15.4) <.0001
Tan if you work at it 103 (32.6) 93 (42.7) 77 (45.6)
It tans easily 186 (58.9) 104 (47.7) 62 (37.6)

1p-value for chi-square test.

Iannacone et al.

Iannacone et al. BMC Cancer 2012 12:417   doi:10.1186/1471-2407-12-417

Open Data