Table 2.

Intergroup and intragroup comparison of the pretest and posttest Perceived Stress Scale total score averages of the nurses in the experimental and control groups.

Groups		First measurement Mean ± SD	Final measurement Mean ± SD	Test and p values
				ta	df		p value
Experimental group		32.47 ± 3.57	21.39 ± 4.65	16.794		50	0.000
Control group		31.36 ± 5.03	31.42 ± 5.03	0.171		49	0.865
Test and p values	tb	1.279	10.394
	df	99	99
	p value	0.204	0.000

^aPaired samples t-test.

^bIndependent samples t-test.