Table 1.

Characteristics of the Study Population

Characteristic	Controls (n = 385)	Any Type of Skin Cancera(n = 453)	Squamous Cell Carcinoma (n = 153)	Nodular Basal Cell Carcinoma (n = 284)	Superficial Multifocal Basal Cell Carcinoma (n = 142)
Sex (no. [%])
Male	163 [42.3]	254 [56.1]	99 [64.7]	162 [57.0]	74 [52.1]
Female	222 [57.7]	199 [43.9]	54 [35.3]	122 [43.0]	68 [47.9]
Age at interview (years):
Mean	58.5	63.0	66.2	63.3	60.4
Range	28.6–79.9	31.6–78.2	36.9–78.2	31.6–78.2	31.7–78.2
Skin type (no. [%]):b
IV: Tan, never burn	24 [6.2]	24 [5.3]	7 [4.6]	16 [5.6]	9 [6.3]
III: Tan, sometimes burn	181 [47.0]	167 [36.9]	46 [30.1]	107 [37.7]	50 [35.2]
II: Burn, then tan	155 [40.3]	202 [44.6]	76 [49.6]	123 [43.3]	61 [43.0]
I: Burn, never tan	25 [6.5]	60 [13.2]	24 [15.7]	38 [13.4]	22 [15.5]
Hair color at age 20 years (no. [%]):c
Black	27 [7.1]	22 [4.8]	5 [3.3]	16 [5.6]	7 [4.9]
Brown	97 [25.3]	79 [17.4]	13 [8.5]	58 [20.4]	28 [19.7]
Dark blond	143 [37.3]	162 [35.8]	55 [35.9]	94 [33.1]	46 [32.4]
Light blond	96 [25.1]	148 [32.7]	58 [37.9]	93 [32.8]	44 [31.0]
Red	20 [5.2]	42 [9.3]	22 [14.4]	23 [8.1]	17 [12.0]

^aMore than one type of skin cancer was present in 111 subjects (see text).

^bDistribution compared with that in control subjects (P <.05).

^cNot assessed in two control subjects.