TABLE 1.

Demographic and clinical characteristics

Age, y	Cases (n = 176)	Controls (n = 178)
Mean (SD)	44.7 (0.2)	44.7 (0.2)
40–44, no. (%)	82 (46.6)	85 (47.8)
45–49, no. (%)	94 (53.4)	93 (52.2)
Sex, no. (%)	Cases (n = 176)	Controls (n = 178)
Female	113 (64.2)	124 (69.7)
Male	63 (35.8)	54 (30.3)
BMI	Cases (n = 137)	Controls (n = 146)
Mean (SD)	27.7 (6.1)	28.2 (6.9)
≥30, no. (%)	40 (29.2)	50 (34.2)
<30, no. (%)	97 (70.8)	96 (65.8)
Race, no. (%)	Cases (n = 176)	Controls (n = 178)
White	158 (89.9)	151 (84.8)
African American	5 (2.8)	11 (6.2)
Hispanic	0 (0)	3 (1.7)
Asian	6 (3.4)	6 (3.4)
Native American	—	—
Other/unknown	7 (4)	7 (3.9)
Clinical, no. (%)	Cases (n = 173)	Controls (n = 169)
Diabetes	3 (1.7)	5 (3)
Aspirin use	10 (5.8)	10 (5.9)
HRT	3 (1.7)	7 (4.1)
Statin use	10 (5.8)	10 (5.9)

SD, Standard deviation; BMI, body mass index; HRT, hormone replacement therapy.