Table 4.

Health related quality of life (SF-36), the relative risk and the risk difference

Good quality of life	Index Group	Control Group	RR	RD	p-value
(Subscales of SF-36)	proportion (good/not good)*	proportion (good/not good)*	(95% CI)	(95% CI)
Base line
Bodily Pain	2%	3%	-	-	-
	(n = 4/202)	(n = 6/197)
Physical Function	17%	22%	-	-	-
	(n = 34/166)	(n = 45/156)
Social Function	35%	33%	-	-	-
	(n = 72/132)	(n = 66/137)
Role Emotion	55%	57%	-	-	-
	(n = 114/92)	(n = 116/87)
General Health	34%	35%	-	-	-
	(n = 69/133)	(n = 70/129)
26 weeks
Bodily Pain	37%	24%	1.2	13%
	(n = 69/120)	(n = 43/133)	(1.0-1.4)	(3-21)	0.012
Physical Function	41%	35%	1.1	6%
	(n = 75/110)	(n = 61/113)	(0.9-1.3)	((-5)-16)	0.285
Social Function	51%	37%	1.3	14%
	(n = 95/91)	(n = 65/110)	(1.1-1.5)	(4-24)	0.008
Role Emotion	57%	48%	1.2	9%
	(n = 106/79)	(n = 83/91)	(1.0-1.5)	((-1)-20)	0.069
General Health	38%	36%	1.0	2%
	(n = 70/116)	(n = 63/112)	(0.9-1.2)	((-8)-12)	0.748
52 weeks
Bodily Pain	39%	28%	1.2	11%
	(n = 71/113)	(n = 45/114)	(1.0-1.4)	(0-20)	0.045
Physical Function	42%	32%	1.2	10%
	(n = 76/105)	(n = 50/107)	(1.0-1.4)	(0-20)	0.055
Social Function	49%	36%	1.2	13%
	(n = 89/92)	(n = 58/101)	(1.0-1.5)	(2-23)	0.018
Role Emotion	55%	46%	1.2	9%
	(n = 101/84)	(n = 72/85)	(1.0-1.5)	((-2)-19)	0.107
General Health	39%	34%	1.1	5%
	(n = 70/110)	(n = 54/106)	(0.9-1.3)	((-5)-15)	0.326

The proportion of patients with good health related quality of life (subscales of SF-36) in the intervention groups at baseline and at follow-ups, the relative risk (RR), and the risk difference (RD), with corresponding 95% confidence intervals (95% CI) and p-values at follow-ups.

* Numbers of persons with good/not good subscales of health related quality of life (SF-36) in the intervention groups.