Table 5.

Regression analysis of EQ-VAS

	Visual Analogue Scale (EQ-VAS)
	EQ-5D-Y	EQ-5D-Y plus bolt-on
Mobility: some problems	1.15	0.06
Mobility: a lot of problems	8.79
Looking after myself: some problems	− 7.90	− 9.80
Looking after myself: a lot of problems	− 32.94
Doing usual activities: some problems	− 13.43*	− 10.10*
Doing usual activities: a lot of problems	− 22.69	− 31.55*
Having pain or discomfort: some problems	− 8.59*	− 12.38*
Having pain or discomfort: a lot of problems	− 2.37	− 27.94*
Feeling worried, sad or unhappy: a bit	7.97*	− 2.50
Feeling worried, sad or unhappy: very	− 27.80*	− 14.39*
Cognitive abilities: some problems		− 5.67
Cognitive abilities: a lot of problems		− 18.14
Concentration: some problems		− 4.55
Concentration: a lot of problems		18.55*
Memory: some problems		− 2.91
Memory: a lot of problems		16.18*
School performance: some problems		3.52
School performance: a lot of problems		− 1.07
Diagnosis (rheumatic disorder)	4.69	4.05
Age	− 0.75	− 1.41*
Constant	88.61*	108.78*
n	213	205
R2	0.35	0.48
Adjusted R2	0.31	0.43
F Statistic	8.84* (df = 12;200)	9.45* (df = 18;186)

*p < .05