| |
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.
