Table 4.

Mean scores and CI by regional body pain groups

Questionnaire	Regional body pain diagram group				Pairwise comparisons
	None	Low (1–2)	High (≥ 3)	p value trend		None vs low	None vs high	Low vs high
WOMAC physical function (n = 260)				0.001
Adjusted mean (SE)	43 (3)	48 (2)	53 (3)		Difference	−5	−10	−5
95% CI	37–50	43–53	48–58		95% CI	−11 to 2	−17 to −3	−11 to 1
					p value*	0.22	0.003	0.09
WOMAC pain (n = 260)				0.001
Mean (SE)	40 (3)	43 (2)	49 (3)		Difference	−3	−10	−6
95% CI	33–46	38–48	44–55		95% CI	−10 to 3	−17 to −2	−12 to 0
					p value *	0.60	0.004	0.03
MHI-5 (n = 259)				0.002
Mean (SE)	68 (4)	66 (3)	58 (3)		Difference	2	10	8
95% CI	61–75	61–72	52–64		95% CI	−5 to 9	2–18	2–14
					p value *	1.00	0.006	0.006
Pain Catastrophizing Scale (n = 219)				0.002
Mean (SE)	9 (2)	12 (2)	16 (2)		Difference	−2	−6	−4
95% CI	5–14	8–15	12–19		95% CI	−7 to 2	−11 to −2	−8 to 0
					p value*	0.58	0.005	0.04

MHI-5 = five-item Mental Health Index; * adjusted for multiple comparisons using Bonferroni method.