Table 3.
Strength of concordance between stiffness measurements assessed in three positions in the biopsy area
| Position (No. of patients) | Method assessing concordance | |
| Quantitative concordance | Spearman mean (95% CI) | Intra class coefficient mean (95% CI) |
| Reference vs anterior (196) | 0.81 (0.75-0.85) | 0.90 (0.86-0.94) |
| Reference vs lower (196) | 0.77 (0.70-0.82) | 0.86 (0.79-0.93) |
| Anterior vs lower (196) | 0.77 (0.70-0.82) | 0.87 (0.80-0.94) |
| Two classes concordance | Discordance rate (%) | Kappa mean (SE) |
| Advanced vs non advanced fibrosis | ||
| 7.1 cutoff | ||
| Reference vs anterior (196) | 35 (17.9)a | 0.63 (0.07) |
| Reference vs lower (196) | 33 (16.8)b | 0.66 (0.07) |
| Anterior vs lower (196) | 34 (17.3)c | 0.64 (0.07) |
| 8.8 cutoff | ||
| Reference vs anterior (196) | 22 (11.2) | 0.71 (0.07) |
| Reference vs lower (196) | 28 (14.3) | 0.65 (0.07) |
| Anterior vs lower (196) | 20 (10.2) | 0.74 (0.07) |
a
P = 0.06 vs 8.8 kPa cutoff;
b
P = 0.50 vs 8.8 kPa cutoff;
c
P = 0.04 vs 7.1 kPa cutoff.