Table 1:

Demographics of the Study Sample

Characteristic	Patients with Sleep Apnea (n = 72)	Control Subjects (n = 30)	P Value*
Age, yr	49.3 ± 12.0	37.9 ± 11.9	<0.001
BMI, kg/m2	40.4 ± 7.7	35.5 ± 6.0	0.003
AHI, events per hour	43.5 ± 28.0	4.7 ± 3.1	<0.001
Sex, M:F	36:36	8:22	0.030
Race, W:AA	34:38	19:11	0.138

Definition of abbreviations: AA = African American; AHI = apnea–hypopnea index; BMI = body mass index; W = white.

Significant differences (P < 0.05) are presented in bold.

^*P value from t test or chi-square test.