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Table 4 Regression coefficients with 95% CIs for potential factors associated with increased postoperative pain after THA in a fast-track setting

From: Which patient-specific and surgical characteristics influence postoperative pain after THA in a fast-track setting?

  Univariable analyses Multivariable analysis
coefficient (95% CI) p-value coefficient (95% CI) p-value
Age   0.006 (−0.02–0.03) 0.66
BMI   0.03 (−0.03–0.09) 0.28
Gender male vs. female −0.31 (−0.79–0.18) 0.22
ASA classification ASA2 vs. ASA1 0.30 (−0.21–0.80) 0.25
Surgery time   −0.01 (−0.03–0.0005) 0.06 0.0004 (−0.01–0.01) 0.96
Diabetes Mellitus   −0.05 (−0.88–0.78) 0.92
Incision length   0.02 (−0.26–0.31) 0.89
Living situation with cohabitants vs. alone 0.53 (−0.05–1.10) 0.08 0.50 (−0.08–1.07) 0.11
Preoperative antidepressants use yes vs. no 0.66 (−0.39–1.71) 0.22
Preoperative pain medication use yes vs. no 0.68 (0.18–1.18) 0.009 0.78 (0.28–1.26) 0.005
Preoperative pain   0.10 (−0.01–0.21) 0.08 −0.02 (−0.13–0.09) 0.73
DN4 likely vs. unlikely 0.70 (0.13–1.28) 0.02 0.68 (0.15–1.20) 0.02
APAIS anxiety yes vs. no −0.06 (−0.67–0.54) 0.84
APAIS information average vs. no/little −0.02 (−0.61–0.56) 0.93 −0.21 (−0.74–0.31) 0.45
  high vs. no/little 0.50 (−0.16–1.15) 0.15 0.45 (−0.12–1.02) 0.15
  1. Factors that were associated with the outcome in univariable analyses (p-values <0.20) were included in a multivariable linear mixed model for repeated measures. In the multivariable analyses p-values <0.05 were considered significant