Table 5:

Differences between tertile groups on clinical outcomes

Clinical Outcome	Group Comparisons	Estimate	SE	Wald Z	P	Cohen’s d
Study 1 (N=959)
Pain Intensity	Clinical v. Subclinical	0.71	0.16	4.47	<.001	0.36
	Subclinical v. Minimal	0.11	0.16	0.70	0.49	-
	Clinical v. Minimal	0.82	0.15	5.40	<.001	0.43
Pain Catastrophizing	Clinical v. Subclinical	8.22	0.85	9.65	<.001	0.77
	Subclinical v. Minimal	8.07	0.88	9.19	<.001	0.73
	Clinical v. Minimal	16.29	0.86	18.98	<.001	1.50
Quality of Life	Clinical v. Subclinical	−11.74	1.25	−9.38	<.001	0.75
	Subclinical v. Minimal	−7.07	1.25	−5.65	<.001	0.44
	Clinical v. Minimal	−18.82	1.28	−14.75	<.001	1.16
Activity Limitations	Clinical v. Subclinical	8.42	1.8	4.68	<.001	0.38
	Subclinical v. Minimal	6.87	1.84	3.74	<.001	0.29
	Clinical v. Minimal	15.29	1.84	8.29	<.001	0.66
Study 2 (N=207)
Pain Intensity	Clinical v. Subclinical	0.53	0.31	1.69	0.09	-
	Subclinical v. Minimal	1.12	0.38	2.98	<.0.01	0.58
	Clinical v. Minimal	0.59	0.33	1.78	0.07	-
Pain Catastrophizing	Clinical v. Subclinical	5.75	1.85	3.11	<0.01	0.57
	Subclinical v. Minimal	6.34	2.18	2.91	<0.01	0.59
	Clinical v. Minimal	12.09	1.81	6.67	<.001	1.20
Functional Disability	Clinical v. Subclinical	0.25	2.00	0.13	0.90	-
	Subclinical v. Minimal	6.07	2.36	2.57	<0.05	0.51
	Clinical v. Minimal	5.82	2.00	2.90	<0.01	0.52

False Discovery Rate (FDR) Type-1 error control was used for all pairwise comparisons.