Predicting Acute Postoperative Pain Trajectories and Long-Term Outcomes of Adolescents after Spinal Fusion Surgery

Table 3

Description of final pain trajectory model, predicted and raw acute postoperative pain intensity values.

Pain trajectory	Slopes				Predicted values (NRS 0–10)					Raw values (NRS 0–10), mean (SD)
	n	Intercept	Linear	Quadratic	POD1	POD2	POD3	POD4	POD5	POD1	POD2	POD3	POD4	POD45
1	26	1.21162	0.0277	−0.00018	1.77	2.13	2.28	2.21	1.95	1.57 (0.66)^a,b,c	1.88 (0.71)^a,b,c	1.94 (0.49)^a,b,c	2.40 (1.18)^a,b,c	1.91 (0.72)^a,b,c
2	29	3.06402	0.0128	−0.00011	3.31	3.42	3.42	3.28	3.02	3.10 (1.03)^a,e	3.44 (0.67)^a,d,e	3.33 (0.55)^a,d,e	3.32 (0.73)^a,d,e	3.09 (0.66)^a,d,e
3	26	2.85109	0.0348	−0.00016	3.59	4.15	4.52	4.71	4.72	3.21 (1.06)^b,f	4.07 (0.83)^b,d,f	4.25 (0.64)^b,d,f	4.88 (0.85)^b,d,f	4.75 (1.06)^b,d,f
4	25	5.15001	0.0192	−0.00014	5.53	5.75	5.81	5.71	5.44	5.40 (0.90)^c,e,f	5.63 (0.85)^c,e,f	5.74 (0.69)^c,e,f	5.82 (1.26)^c,e,f	5.65 (1.18)^c,e,f
										F = 73.2	F = 104.9	F = 182.3	F = 58.4	F = 84.2