Table I.

Baseline characteristics of the study population.

No. of patients	66
Age (years)	49.59 ± 13.04
Gender (M/F)	60/6
Body mass index	29.87 ± 3.81
Epworth Sleepiness Scale	12.27 ± 3.98
Polysomnographic study
Apnea-Hypopnea Index	43.10 ± 22.97
Oxygen Desaturation Index	38.30 ± 21.79
Lower O 2 Saturation (%)	75.82 ± 8.38
% Time with O 2 Saturation <90%	15.74 ± 16.40