Table 1 Radiographic measurements and interobserver agreement
Inter-observer agreement | ||||||
|---|---|---|---|---|---|---|
Variable | Mean ±SD | Median | (range) | (IQR) | ICC | 95% C.I. |
Measurements | ||||||
Humeral head size (mm) | 43.4 ± 4.0 | 43.6 | (36 – 52) | (40 – 47) | 0.89 | (0.85 – 0.92) |
G – Y | -19.6 ± 2.3 | 19.5 | (-26 – -15) | (-21 – -18) | 0.82 | (0.74 – 0.88) |
G – BC | -1.5 ± 4.6 | -2.0 | (-13 – 9) | (-5 – 2) | 0.86 | (0.81 – 0.90) |
G – CC | -36.8 ± 6.6 | -35.7 | (-60 – -23) | (-40 – -32) | 0.80 | (0.72 – 0.85) |
Ratios (relative to humeral head size) | ||||||
G – Y | -0.45 ± 0.05 | -0.46 | (-0.58 – -0.35) | (-0.48 – -0.42) | 0.80 | (0.72 – 0.86) |
G – BC | -0.04 ± 0.11 | -0.04 | (-0.34 – 0.19) | (-0.10 – 0.04) | 0.86 | (0.81 – 0.90) |
G – CC | -0.85 ± 0.13 | -0.84 | (-1.35 – -0.62) | (-0.93 – -0.76) | 0.74 | (-0.65 – 0.81) |