Table 5.

Differences between mean scores of the PSS between groups according to ANCOVA

	Experimental Mean (SD)	Control Mean (SD)	F-test	P value
Pre-test
Perceived stress	29.25 (4.75)	29.09 (4.79)	0.31	0.18
Positive PSS	17.93 (3.5)	16.48 (3.27)	0.40	0.24
Negative PSS	14.43 (3.50)	15.51 (5.07)	2.82	2.39
Post-test
Perceived stress	28.18 (4.94)	28.29 (4.62)	0.33	7.05*
Positive PSS	17.37 (4.64)	15.58 (2.99)	5.1	3.65*
Negative PSS	14.90 (3.68)	15.22 (4.31)	0.46	1.30

*; P≤0.05 is significant.