Comparison of patient outcomes in periarticular and intraarticular local anaesthetic infiltration techniques in total knee arthroplasty

Table 2 Multiple regression results—significant variables only

Response variable	Independent variables	Coefficient	p value
Sqrt (PCA)	Age	−0.089	0.0104
Sqrt (PCA)	Oxford (post)	0.145	0.0057
Sqrt (total opioid analgesia [24 h])	Age	−0.107	0.0038
Sqrt (total opioid analgesia [24 h])	Oxford (post)	0.163	0.0080
Sqrt (total opioid analgesia [admission])	Age	−0.165	0.0001
	Oxford (pre)	0.177	0.0092
	Oxford (post)	0.160	0.0096

ISSN: 1749-799X