Sleep Promotion among Critically Ill Patients: Earplugs/Eye Mask versus Ocean Sound—A Randomized Controlled Trial Study

Table 4

Carryover effect in group 1 and group 2.

Group		Mean ± SD	df	t value	^c value
Group 1 (N = 30)	1^st night	25.23 ± 4.7	29	1.79	0.08
	3^rd night	23.67 ± 2.9
Group 2 (N = 30)	1^st night	25.97 ± 5.26	29	1.77	0.08
	3^rd night	24.17 ± 4.13

^c- paired t-test, ‘t’(29) = 2.045.