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. Author manuscript; available in PMC: 2024 Mar 1.
Published in final edited form as: Arch Orthop Trauma Surg. 2022 Jan 3;143(3):1323–1330. doi: 10.1007/s00402-021-04258-4

Table 4.

Intra- and inter-observer agreement of 2D measurements as quantified by the intra class coefficient.

Xray-LCEA CT-LCEA CT-ACEA DRR-ACEA
Preoperative
Intra-observer 0.944 (0.868–0.977) 0.875 (0.716–0.948) 0.928 (0.830–0.971) 0.924 (0.822–0.969)
Inter-observer 0.906 (0.792–0.959) 0.913 (0.798–0.964) 0.727 (0.429–0.882) 0.741 (0.480–0.881)
Postoperative
Intra-observer 0.913 (0.797–0.964) 0.982 (0.957–0.993) 0.904 (0.777–0.960) 0.886 (0.738–0.953)
Inter-observer 0.774 (0.513–0.904) 0.962 (0.907–0.985) 0.721 (0.420–0.880) 0.748 (0.466–0.892)