. Author manuscript; available in PMC: 2018 May 1.

Published in final edited form as: Osteoarthritis Cartilage. 2016 Dec 14;25(5):667–675. doi: 10.1016/j.joca.2016.12.013

Table 2.

WOMAC pain outcomes by regional body pain groups in STARS participants

	Regional Body Pain Diagram Groups						P-value

Outcome	0 N=53		1–2 N=121		3–6 N=67		Trend

	N	median (25^th, 75^th %ile)	N	median (25^th, 75^th %ile)	N	median (25^th, 75^th %ile)

WOMAC pain Score	51	0 (0, 5)	120	5 (0, 15)	66	10 (0, 25)	<0.001

WOMAC pain categories							<0.001
0–14	47	92.2	84	70.0	37	56.1
15–39	4	7.8	33	27.5	23	34.8
≥40	0	0	3	2.5	6	9.1

WOMAC pain change^*	51	−30 (−45, −15)	120	−30 (−45, −20)	64	−30 (−45, −15)	0.82

% change in WOMAC pain	51	−99.5% (−99.9%, −76.9%)	120	−89.3% (−99.8%, −59.9%)	64	−69.6% (−99.6%, −50%)	0.008

Achieved MCID							<0.001
No	1	2.0	10	8.3	15	23.4
Yes	50	98.0	110	91.7	49	76.6

Change score calculated as follow-up – baseline

Percent change in WOMAC pain contains two outliers. Two subjects reported no pain at baseline but pain at the follow-up visit. Their change in pain has been truncated to 100%.