Postoperative Etoricoxib versus Ketoprofen Administration for Pain Management after Total Knee Arthroplasty: A Randomized, Double-Blind Controlled Study

Table 4

Duration of analgesia (min).

Group	Mean	Std. dev.	95% confidence interval for mean		Median	25% percentile	75% percentile	Normality test passed
			Lower bound	Upper bound
Group E	337	89	295	344	320	275	380	No
Group K	283	76	262	304	285	240	330	Yes
Group P	247	48	236	256	245	210	285	Yes