Table 3.

Means (standard deviation) for the outcome measures (unadjusted), number of treatment sessions and effect sizes of the discharge outcome scores.

Variable (n)	Time	Extremity Source Group	Spinal Source Group	Effect Size*
NPRS (n = 322)	Initial	5.3 (1.8)	5.1 (1.9)	0.63
	Discharge	2.2 (2.2)	0.9 (1.1)
OMPSQ (n = 322)	Initial	43.9 (12.5)	43.4 (13.5)	0.38
	Discharge	26.0 (16.8)	20.3 (10.7)
UEFI (n = 147)	Initial	54.6 (14.4)	53.8 (14.0)	0.64
	Discharge	66.7 (16.4)	73.0 (9.4)
LEFS (n = 175)	Initial	49.6 (13.8)	50.0 (14.4)	0.58
	Discharge	65.5 (15.6)	72.8 (6.8)
GRC (n = 322)	Discharge	2.9 (1.9)	4.0 (0.9)	0.86
Number of Treatment Session	-	6.4 (2.9)	5.5 (2.7)	-

Note: *Positive effect sizes indicated that the outcomes at discharge favored the spinal source group.

n = sample size. NPRS = Numerical Pain Rating Score. OMPSQ = Orebro musculoskeletal pain questionnaire. UEFI = Upper extremity functional index.

LEFS = Lower extremity functional scale. GRC = Global rating of change