Table 2.

Mean and standard deviation of sleep parameter on the first (without intervention) and second week (with intervention) and the result of paired t-test on sleep diary parameter.

Parameter	Without intervention	With intervention	Paired t-test
	Mean ± SD	Mean ± SD	Mean ± SD	P-value
Time standing up	6.15 ± 0.74	6.55 ± 0.81	−0.4 ± 0.77	<0.001
Sleep latency	19.1 ± 4.15	7.23 ± 2.9	11.8 ± 3.13	<0.001
Number of awaking	2.06 ± 0.73	1.06 ± 0.65	1 ± 0.69	<0.001
Total sleep time	6.05 ± 0.91	7.3 ± 0.85	−1.25 ± 1.28	<0.001