Table 3. Demographic and clinical characteristics patients based on PainDETECT scores.

	Unlikely NP (n=74)			Possible NP (n=23)			Likely NP (n=12)
	n	Median	Min-Max	n	Median	Min-Max	n	Median	Min-Max	p
Age (year)		63	44-80		60	50-81		62	50-77	0,379
Body mass index (kg/m2)		32,84	22,86-60		34,4	26.4-47.1		31,5	27.5-41.1	0,57
Sex										0,07
Female	59			22			12
Male	15			1			0
Work status										0,11
Working	7			0			0
Not working	67			23			12
Educational status
Illiterate	14				7		0			0,25
Primary school	50			14			12
High school-university	10			2			0
Symptom duration (months)		24	4-240		60	6-120		120	36-180*	0,001
Pain Visual Analog Scale
At rest		4	0-8		4	2-8		5	2-10*	0,034
With motion		7	2-8		7	4-8		8	7-10*	0,041
WOMAC
Pain		10	3-18		12	8-20*		13,5	8-17*	0,004
Stiffness		2	0-6		2	0-6		4	0-6	0,159
Physical function		29,5	3-52		33	14-56		41,5	22-50*	0,030
Total		42,5	9-75		46	25-70		58,5	34-71*	0,008
Kellgren-Lawrence grade										0,67
Grade 1	11			2			1
Grade 2	22			8			4
Grade 3	33			12			4
Grade 4	8			1			3
NP: Neuropathic pain; Min: Minimum; Max: Maximum; WOMAC: Western Ontario and McMaster Universities osteoarthritis index; * Significantly different compared with unlikely neuropathic pain; PainDETECT questionnaire groups: Likely neuropathic pain (score ≥19), possible (score ≥13 to ≤18) and unlikely (score≤12).