Table I.

Pre-operative intergroup analysis.

		N	Mean	Std. deviation	P
Age	UPPP	10	58.40	9.90	0.170
	ESP	10	52.80	11.39
	BRP	10	48.20	11.39
	Total	30	53.13	11.36
BMI	UPPP	10	26.79	3.72	0.181
	ESP	10	27.03	2.12
	BRP	10	28.77	2.56
	Total	30	27.53	2.92
preAHI	UPPP	10	34.04	14.03	0.953
	ESP	10	35.59	13.87
	BRP	10	37.84	21.60
	Total	30	35.82	16.37