Table 5 .

Pain, Function, and QOL for Neuropathic Pain, Non-Neuropathic Pain, High Pain Catastrophizing, and Low Pain Catastrophizing across the Entire Sample (N = 86)

Time point	Neuropathic pain (DN4 score ≥ 4)		Non-neuropathic pain (DN4 score < 4)		p-value	95% CI
	No. (%) of patients	Mean (SD) score	No. (%) of patients	Mean (SD) score
NPRS
Baseline	45 (52)	14.33 (6.34)	41 (48)	13.20 (6.53)	0.41	−1.0, −0.3
6 mo	13 (15)	3.71 (1.87)	65 (76)	1.38 (2.14)	< 0.001*	−3.5, −1.0
12 mo	11 (13)	3.23 (2.21)	67 (78)	1.38 (2.14)	0.01*	−3.2, −0.4
PSFS
Baseline	45 (52)	23.85 (4.16)	41 (48)	13.20 (6.53)	0.41	−3.9, −1.6
6 mo	13 (15)	23.91 (4.39)	73 (85)	26.21 (5.36)	0.14	−0.8, −5.5
12 mo	11 (13)	23.91 (4.39)	77 (89)	27.15 (4.85)	0.04*	0.1, −6.4
EQ-5D
Baseline	45 (52)	70.40 (19.12)	41 (48)	74.63 (17.78)	0.29	−3.7, −12.2
6 mo	13 (15)	82.00 (14.05)	73 (85)	85.61 (10.46)	0.29	−3.2, −10.4
12 mo	11 (13)	79.82 (12.05)	77 (89)	86.11 (11.11)	0.09	−1.0, −13.6
	High pain catastrophizing (PCS > 24)		Low pain catastrophizing (PCS ≤ 24)
	No. (%) of patients	Mean (SD) score	No. (%) of patients	Mean (SD) score
NPRS
Baseline	23 (27)	7.30 (1.00)	63 (73)	6.80 (1.60)	0.13	−1.3, −0.2
6 mo	4 (5)	4.25 (3.90)	82 (95)	1.70 (2.00)	0.02*	−4.7, −0.4
12 mo	7 (8)	3.60 (2.70)	79 (92)	1.47 (2.10)	0.02*	−3.8, −0.4
PSFS
Baseline	23 (27)	12.35 (6.40)	63 (73)	14.3 (6.4)	0.21	−1.1, −5.1
6 mo	4 (5)	24.25 (4.50)	82 (95)	25.8 (5.3)	0.56	−3.8, −7.0
12 mo	7 (8)	25.14 (5.50)	79 (92)	26.8 (4.9)	0.40	−2.2, −5.5
EQ-5D
Baseline	23 (27)	61.96 (22.90)	63 (73)	75.8 (15.1)	0.002*	5.3, −22.4
6 mo	4 (5)	87.00 (8.70)	82 (95)	85.0 (11.3)	0.73	−13.5, −9.5
12 mo	7 (8)	84.86 (8.70)	79 (92)	85.1 (11.7)	0.96	−8.8, −9.3

QOL = quality of life; DN4 = Diagnostic Neuropathic Questionnaire; NPRS = Numerical Pain Rating Scale; PSFS = Patient-Specific Functional Scale; EQ-5D = EuroQoL-5D instrument; PCS = Pain Catastrophising Scale.

^*p < 0.05.