Table 1: Demographic characteristics of patients and controls.

Variable Patients
n=76 (%)
Controls
n=82 (%)
p
Age a
(variation in years)
40.3
(20-74)
41.2
(20-76)
0.9b
White 11 (14) 15 (18)
Ethnicity c Mulatto 36 (48) 37 (45) 0.7
Black 29 (38) 30 (37)

a = Student’s t-test; b = p-value of the Kolmogorov–Smirnov test; c = p-value of the chi-square test.