Table 1.

Incidence of Comorbid Medical Conditions

Condition	%
Hypertension	41%
Sleep apnea	25%
Gastroesophageal reflux disease	23%
Diabetes mellitus	19%
Osteoarthritis	12%
Depression	11%
Hypercholesterolemia	9%
Coronary artery disease	2.6%
Congestive heart failure	1.6%
Cirrhosis	0.5%
Benign intracranial hypertension	0.5%
Venous stasis	0.1%