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Table 2 Agreement between TE and ARFI fibrosis stage classification according to “equivalent Metavir” fibrosis scores

From: Acoustic Radiation Force Impulse (ARFI) and Transient Elastography (TE) for evaluation of liver fibrosis in HIV-HCV co-infected patients

   ARFI
   F1 F2 F3 F4 TOTAL
TE F1 23 6 2 0 31
F2 3 3 1 0 7
F3 0 0 0 2 2
F4 0 0 0 6 6
TOTAL 26 9 3 8 46
  1. Observed agreement: 69.6% 95% CI = [54.2–82.3].
  2. Weighted Kappa coefficient: 0.82 95% CI = [0.70–0.95].