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Table 1 Repeat measurements (mean (SD)) of the same baseline lateral radiographs for ten surgical cases

From: Change of sagittal spinal alignment and its association with pain and function after lumbar surgery augmented with an interspinous implant

  Test 1 Test 2 Difference 2-tail t-test
Lumbar Lordosis (°) 57.1 (11.4) 57.0 (12.2) −0.15 (2.32) p = 0.86
Sacral Inclination (°) 37.4 (5.2) 37.3 (6.2) 0.07 (1.56) p = 0.90
Primary Disc Angle (°) 15.6 (6.8) 16.1 (7.5) 0.50 (1.09) p = 0.20
Regional Sagittal Balance (Rmm) 2.3 (27.9) 2.0 (27.5) 0.31 (1.92) p = 0.62