Table 2.

Control sleep parameters for the 25 subjects recorded with polysomnography

	Sleep latency(min)	Sleep duration(min)	Number ofawakenings	Sleepefficiency (%)
Group 1	12.93 ± 4.39	441.91 ± 8.54	33.42 ± 3.06	92.73 ± 1.09
Group 3	12.74 ± 2.94	434.56 ± 7.01	26.15 ± 2.38	93.93 ± 1.03