Observational Study
Copyright ©The Author(s) 2020.
World J Orthop. Mar 18, 2020; 11(3): 158-166
Published online Mar 18, 2020. doi: 10.5312/wjo.v11.i3.158
Table 3 The median value and quartiles, Wilcoxon signed rank test and effect size r for men regarding interspinous pressure pain thresholds before (pre-test) and after (post-test) exposure to prolonged flexed lumbar sitting posture
VariablesPre-test median (quartiles)Post-test median (quartiles)Z-standardised test statisticP valueEffect size r
L1-L2405 (356, 518)340 (284, 441)-3.1100.001-0.42
L2-L3379 (337, 421)322 (288, 470)-2.6210.009-0.36
L3-L4370 (320, 453)331 (264, 453)-2.3780.017-0.32
L4-L5321 (299, 474)302 (275, 479)-1.8190.069-0.25
All variables (L1-L2, L2-L3, L3-L4 and L4-L5)366 (288, 403)322 (227, 344)-3.0400.002-0.41