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Table 3 Regression analysis of the relationship between the postoperative paraspinal muscle volume loss and age

From: Paraspinal muscle changes after single-level posterior lumbar fusion: volumetric analyses and literature review

Age vsMRI (n = 24)p-valueCT (n = 16)p-value
β coefficientAdjusted R2β coefficientAdjusted R2
Changes of MF (cm3)
 Right−0.5920.3210.002a−0.076− 0.0650.780
 Left− 0.4890.2040.015a0.114−0.0570.674
Changes of ES (cm3)
 Right0.203−0.0020.342−0.5900.3010.016a
 Left0.2670.0290.207−0.2810.0130.292
Changes of Psoas (cm3)
 Right0.184−0.0100.3880.019−0.0710.945
 Left0.155−0.0200.4690.189−0.0330.482
  1. MRI magnetic resonance imaging, CT computed tomography, SD standard deviation, MF multifidus, ES erector spinae
  2. aStatistically significant difference was defined as p < 0.05