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Table 1 Correlations between pre- and postoperative pain, n = 96 (Spearman’s correlation coefficients, p)

From: Correlations between inflammatory cytokines, muscle damage markers and acute postoperative pain following primary total knee arthroplasty

Pre-op scores

Post-op NRSR

Post-op NRSW

T1

T2

T3

T4

T1

T2

T3

T4

Pre-op NRSR

0.01, 0.911

0.04, 0.706

−0.14, 0.182

−0.07, 0.482

0.34, 0.001*

0.37, <0.001*

0.25, 0.013*

0.26, 0.010*

Pre-op NRSW

0.40, <0.001*

0.37, <0.001*

−0.001, 0.995

−0.06, 0.595

0.30, 0.003*

0.38, <0.001*

0.39, <0.001*

0.34, 0.001*

Pre-op PDQ

0.08, 0.432

0.06, 0.587

−0.12, 0.240

0.04, 0.697

0.75, <0.001*

0.52, <0.001*

0.47, <0.001*

0.36, <0.001*

  1. Abbreviations: NRSR numerical rating scale at rest, NRSW numerical rating scale at walking, PDQ pain disability questionnaire, T1-T4 1, 2, 3 and 5 days after surgery, respectively. The significant correlations according p < 0.05 (*) remained significant after Bonferroni correction (p = 0.05/3).