Table 2.

Comparison of PSQI scores after training ($\overline{x}$ ± s, points).

Group	Sleep latency	Sleep duration	Sleep efficiency	Sleep disorders	Use of sleeping medication	Daily dysfunction	Sleep quality
Group A	1.68 ± 0.65	1.18 ± 0.24	0.59 ± 0.35	1.00 ± 0.32	1.02 ± 0.24	1.45 ± 0.65	1.75 ± 0.65
Group B	2.01 ± 0.54	1.52 ± 0.28	1.20 ± 0.39	1.23 ± 0.65	1.38 ± 0.34	2.10 ± 0.54	2.00 ± 0.54
t	3.025	7.141	9.017	2.459	6.700	5.958	2.292
P value	0.003	0.000	0.000	0.015	0.000	0.000	0.024