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

Table 2

Numeric rating scale (NRS) scores in POR and ward.

	Control group	Bupivacaine group
NRS in POR	7.9 (6.7, 9.1)	4.5 (3.2, 5.8)	0.001
NRS 24 hours later in ward	7.6 (6.4, 8.7)	4.5 (3.6, 5.3)	0.0002

Continuous variables were described as the mean and 95% confidence interval; an independent -test was used, and statistical significance was considered when . POR: postoperative room.