Analgesic Effects of Intra-Articular Bupivacaine/Intravenous Parecoxib Combination Therapy versus Intravenous Parecoxib Monotherapy in Patients Receiving Total Knee Arthroplasty: A Randomized, Double-Blind Trial

Figure 2

Postoperative numeric rating scale (NRS) scores in the postoperative room (POR) and on the ward. Means and 95% confidence intervals are shown. Scores of the bupivacaine group were lower than those of the control group postoperatively during the first 24 hours. The numbers of patients contributed to each data point were the same as the initial numbers of patients.