Table 4.

Absenteeism in the intervention and control group.

	Pretest		Posttest		Wilcoxon a		Mann-Whitney U
	M	SD	M	SD	Z	p	p
Frequency
Intervention	1.59	0.84	1.29	0.51	−0.86	0.39	0.01
Control	0.62	0.47	0.78	0.40	−0.71	0.48
Absence rate
Intervention	5.40	2.49	2.03	0.74	−3.07	0.00	0.64
Control	1.03	0.20	1.96	0.72	−2.67	0.01
Net number of lost workdays
Intervention	112.58	54.40	66.46	29.62	−2.43	0.02	0.38
Control	5.44	7.47	52.72	29.97	−2.98	0.00

Note. ^a Wilcoxon Signed Ranks Test; M, Mean; SD, Standard Deviation; Z, Z-score; p, significance (two-tailed).