Table 1 Inter-rater and intrarater intraclass correlations among vasculitis disease assessment indices
Disease assessment toolInter-raterIntrarater
ICC (95% CI)p Value for differences among reviewersICC (95% CI)p Value for differences within reviewers
BVAS0.98 (0.97 to 0.99)0.94730.95 (0.87 to 0.99)0.8801
BVAS/WG0.98 (0.96 to 0.99)0.95770.77 (0.34 to 0.97)0.7274
BVAS/20030.98 (0.97 to 0.99)0.97550.80 (0.43 to 0.98)0.4337
PGA0.98 (0.96 to 0.99)0.69330.77 (0.38 to 0.97)0.4923
FFS0.98 (0.96 to 0.99)0.96630.77 (0.39 to 0.97)0.3478
DEI0.98 (0.97 to 0.99)0.95330.86 (0.59 to 0.98)0.8592
  • BVAS, Birmingham Vasculitis Activity Score; BVAS/WG, BVAS for Wegener Granulomatosis; DEI, Disease Extent Index; FFS, Five Factor Score; ICC, intraclass correlation; PGA, Physician Global Assessment.