Table 1.

Subject characteristics

	Controls	Cases
	(N = 571)	(N = 310)
	N (%)	N (%)
Age in years
15 – 24	25 (4)	24 (8)
25 – 34	132 (23)	63 (20)
35 – 44	175 (31)	80 (26)
45 – 54	160 (28)	67 (22)
55 – 64	79 (14)	76 (25)
Race
Caucasian	536 (94)	273 (88)
Black	16 (3)	9 (3)
Asian	11 (2)	16 (5)
Other	8 (1)	12 (4)
Marital status
Married or living as married	423 (74)	201 (65)
Never married	59 (10)	50 (16)
Divorced or separated	79 (14)	52 (17)
Widowed	7 (1)	7 (2)
Unknown	3 (1)	0
Highest level education
High school or less	153 (27)	146 (47)
Technical school	36 (6)	49 (16)
College or graduate school	382 (67)	115 (37)