Table 4.
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.