Table 2.

Differences in sickness absence (calendar days) over 12 months follow-up between experimental and control group according to intention-to-treat analysis and modified intention-to-treat analysis

Intention-to-treat analysis	Experimental group (n = 132)	Control group (n = 131)	p-value
Total sickness absence duration (SD)	25.97 (44.84)	31.13 (55.47)	0.290
Sickness absence frequency (SD)	2.40 (2.04)	2.60 (3.06)	0.500
% Long-term sickness absence (>28 days)	13.6	18.3	0.300

Modified intention-to-treat analysis	Experimental group (n = 111)	Control group (n = 131)	p-value
Total sickness absence duration (SD)	18.98 (29.50)	31.13 (55.47)	0.007
Sickness absence frequency (SD)	2.25 (1.91)	2.60 (3.06)	0.256
% Long-term sickness absence (>28 days)	10.8	18.3	0.102