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Table 2 ICCs for intra-rater reliability (Between sets)

From: Reliability of three landmarking methods for dual inclinometry measurements of lumbar flexion and extension

Land marking technique Raters Flexion Extension
Method 1- PSIS to L1 A 0.80 0.89
B 0.81 0.90
Method 2 – PSIS to cephalad 10 or 15 cm A 0.90 0.93
B 0.85 0.84
Method 3 – PSIS to 15 cm cephalad A 0.88 0.94
B 0.78 0.89