Table 1 Intra-observer reproducibility and variation

Observer A

0.720

0.609, 0.811

1.172 (0.467, 2.149)

0.002, 6.323

Observer B

0.516

0.368, 0.653

1.081 (0.477, 2.200)

0.001, 14.070

Observer C

0.652

0.525, 0.761

1.146 (0.475, 1.957)

0.006, 13.143

Observer D

0.717

0.605, 0.809

0.744 (0.278, 1.717)

0.006, 9.172

Observer E

0.548

0.401, 0.681

1.779 (0.865, 3.661)

0.006, 11.560

Observer F

0.503

0.338, 0.649

1.624 (0.851, 2.933)

0.018, 8.711