Table 3 

Costutility analyses 

Alternatives 
Usual care 
Usual care plus exercise 


EQ5D utility at baseline^{a} 
0.331 (0.150 to 0.511) 
0.316 (0.162 to 0.470) 
EQ5D utility at 3 months^{a} 
0.334 (0.175 to 0.494) 
0.582 (0.434 to 0.729) 
EQ5D utility at 8 months^{a} 
0.334 (0.175 to 0.493) 
0.528 (0.380 to 0.675) 
QALY over 8 months^{b} 
0.002 (0.087 to 0.091) 
0.133 (0.034 to 0.231) 
QALY difference vs. usual care^{c} 
0.131 (0.011 to 0.290) 

Health system perspective: 

Incremental cost/person (€) 
517 

Costutility (€/QALY)^{c} 
3,947 (1,782 to 47,000) 

Societal perspective: 

Incremental cost/person (€) 
1,032 

Costutility (€/QALY) ‡ 
7,878 (3,559 to 93,818) 



QALY, quality adjusted life year. ^{a}Mean (95% confidence interval) estimated by analysis of covariance with adjustment for baseline EQ5D score and then rounded to 3 significant figures; ^{b}mean (95% confidence interval) using the area under the curve technique; ^{c}mean (95% confidence interval estimated by bootstrapping) using the area under the curve technique. 

Gusi and TomasCarus Arthritis Research & Therapy 2008 10:R24 doi:10.1186/ar2377 