Effectiveness of Different Pain Control Methods in Patients with Knee Osteoarthritis after Knee Arthroplasty

Table 9

GEE analysis of the lowest pain rating variation in relation to group and anesthetic method ().

Parameters	Estimate value	Standard error	Wald chi-square	value
Intercept	.895	.124	51.826	<.001
Time
T1 versus T0	2.819	.201	196.65	<.001
T2 versus T0	1.418	.158	80.250	<.001
T3 versus T0	.463	.149	9.717	.002
T4 versus T0	.237	.145	2.697	.101
Anesthetic method
GA versus SA	.327	.250	1.712	.191

Note: GEE = generalized estimating equations; ; ; T₀: recovery room (day of surgery); T₁: ward (day of surgery); T₂: postoperative day 1; T₃: postoperative day 2; T₄: postoperative day 3.