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Table 2 Comparison of NRS scores between the PAI and control groups

From: Periarticular analgesic injection containing a corticosteroid after total hip arthroplasty may prevent deep venous thrombosis: a retrospective comparative cohort study

  Control group (N = 113) PAI group (N = 87) p value
NRS scores    
Preoperative 5.5 ± 2.1 6.3 ± 2.1 0.004
1 day postoperative 4.7 ± 2.4 3.8 ± 2.4 0.0051
7 days postoperative 2.3 ± 1.7 2.2 ± 4.7 0.0114
  1. Values are expressed as the mean ± standard deviation. PAI periarticular analgesic injection, NRS numeric rating scale