Parameter A Routine polysomnography
(n = 68)		 B Supine position polysomnography
(n = 59)
Odds Ratio Significance Odds Ratio Significance
Gender Female 3.01 0.158 1.07 0.928
Male 1
BMI 0.83 0.027 0.98 0.800
Pre-trial
sleep apnea
severity 		Mild 14.95 0.004 25.24 0.000
Moderate 5.42 0.077 6.46 0.017
Severe 1

A logistic regression model used to estimate the probability of treatment success.
Those subjects whose apnea-hypopnea index fell below 5 were considered to as cured.
Body mass index (BMI) was used as a continuous variable.
Gender and the pre-trial severity of sleep apnea were used as predictors.