Table IV.
Bland-Altman bias values with lower and upper limits of agreement for the reader agreement analysis.
Variable | Reader 1 vs Reader 2 (LOA) | Reader 1 vs Reader 3 (LOA) | Reader 2 vs Reader 3 (LOA) | |||
---|---|---|---|---|---|---|
Left hip | Right hip | Left hip | Right hip | Left hip | Right hip | |
LCEA,° | -1.2 (-8.5 to 6.2) | 2.0 (-4.7 to 8.7) | 1.0 (-9.5 to 11.6) | 2.0 (-7.0 to 11.0) | 2.2 (-7.1 to 11.5) | 0 (-9.2 to 9.2) |
Tönnis angle,° | -2.8 (-9.1 to 3.6)* | -1.9 (-8.2 to 4.4) | -1.7 (-8.2 to 4.8) | -2.7 (-8.7 to 3.3) | 1.1 (-5.0 to 7.1) | -0.9 (-7.3 to 5.6) |
Sharp’s angle,° | -0.8 (-4.5 to 2.8) | 0.2 (-3.8 to 4.1) | -0.9 (-5.3 to 3.4) | -0.5 (-5.3 to 4.4) | -0.1 (-5.1 to 4.9) | -0.6 (-5.6 to 4.4) |
CCD angle,° | 5.5 (0.4 to 10.7)* | 4.0 (-2.1 to 10.0)* | 3.8 (-6.5 to 14.1)* | 1.7 (-9.5 to 13.0) | -1.7 (-12.1 to 8.7) | -2.2 (-12.7 to 8.2) |
Femoral head coverage, % | 1.0 (-7.5 to 9.4) | 1.2 (-7.0 to 9.5) | 2.7 (-7.6 to 13.1) | 3.1 (-5.5 to 11.6) | 1.8 (-8.0 to 11.6) | 1.8 (-7.8 to 11.5) |
Pelvic obliquity,° | -0.3 (-1.6 to 0.9) | -0.4 (-1.7 to 0.9) | 0.0 (-0.8 to 0.7) |
Large bias was observed.
CCD, caput-collum-diaphyseal; LCEA, lateral centre-edge angle; LOA, limit of agreement.