Table 3.

Comparison of sleep quality in the intervention and control groups before and after the intervention

Group	Before Intervention		After Intervention		Sig
	Mean	SD	Mean	SD
Intervention Group (n = 42)	7.64	2.48	3.80	1.56	W= -5.283 p > 0.001
Control Group (n = 42)	7.42	2.74	7.80	2.81	W= -1.778 p = 0.074
Sig	U = 840.000 p = 0.705		U = 186.500 p > 0.001

Note The Mann-Whitney U test was employed to examine the difference between two groups in the variable sleep quality. The Wilcoxon signed-rank test was used to assess the significant difference between the two groups in the variable sleep quality

Abbreviations: n, number of participants; SD, standard deviation; W, Wilcoxon signed-rank test; U, Mann-Whitney U test; Sig, statistical significance; p, probability-value