Table II.

Comparison of outcome between study group and control group concerning weight loss and working ability.

	Intervention study (%)
Characteristics	n*	Study group	Control group	p value	Difference (95% confidence interval)
Weight loss*	197
Stable or increase		17 (21)	15 (13)
Decrease <;5%		18 (22)	27 (24)
Decrease 5–10%		27 (33)	30 (26)
Decrease >10%		21 (25)	42 (37)	0.23	-
Mean weight loss† in kg [SD]		−5.8 (7.8)	−6.2 (5.8)	0.68	0.4 (−1.5 to 2.3)
On sick leave at baseline	22
Situation unchanged at 6 months		7 (64)	7 (64)
Situation better at 6 months		4(36)	4(36)	1.0	-
Not on sick leave at baseline	133
Situation unchanged at 6 months		29 (55)	64 (80)
Situation worse at 6 months		24 (45)	16 (20)	0.003	25.2 (9.3 to 41.3)
Total number of patients	205	84	121

Calculations of percentage and SD included patients with zero-values.

^*Number of patients included in the analysis.

^†The difference in weight loss after controlling for baseline weight was not significant (p = 0.42) and was estimated to be 0.7 (−1.0 to 2.4).