Table 3

Highest and lowest anchors of the utility scores based on lead time trade-off (LTTO)

AnchorUKFranceGermanyThe NetherlandsSpainItalyOverallP values
Value for ‘health without SpA’ (ASAS HI=0)0.88 (SD 0.16)0.87 (SD 0.17)0.81 (SD 0.21)0.90 (SD 0.15)0.91 (SD 0.13)0.90 (SD 0.14)0.88 (SD 0.16)<0.01
Value for ‘Severe SpA’0.30 (SD 0.34)0.41 (SD 0.36)0.26 (SD 0.33)0.24 (SD 0.32)0.27 (SD 0.34)0.23 (SD 0.32)0.29 (SD 0.34)<0.01
  • For health without SpA, the following number of subjects contributed to the lowest anchor: all subjects N=462, UK N=84; France N=70; Germany N=75; the Netherlands N=90; Spain N=79; and Italy N=70. For ‘severe SpA’, the following number of subjects contributed to the lowest anchor: all subjects N=1289; UK N=241; France N=287; Germany N=182; the Netherlands N=199; Spain N=197; and Italy N=183. A one-way analysis of variance was performed to compare the highest and lower anchors across countries.

  • ASAS HI, Assessment of SpondyloArthritis international Society Health Index; SpA, spondyloarthritis.