Table 3.

Association of comorbidity and overall MHQ score according to patient group

Parameter	Comorbidity present	Comorbidity absent	Mean difference (95% CI)	p value
Depression
TM arthritis (n = 10)	49 ± 22	69 ± 20	−20 (−5 to −36)	0.012
Control (n = 5)	84 ± 20	90 ± 13	−5 (−8 to 19)	0.404
Upper extremity comorbidity
TM arthritis (n = 8)	44 ± 22	70 ± 20	−26 (−10 to −42)	0.002
Control (n = 10)	83 ± 16	93 ± 11	−10 (−1 to −20)	0.036
Lower extremity comorbidity
TM arthritis (n = 18)	66 ± 18	65 ± 25	1 (−14 to 14)	0.947
Control (n = 18)	83 ± 16	93 ± 11	−10 (−1 to −19)	0.028

MHQ = Michigan Hand Questionnaire; CI = confidence interval; TM = trapeziometacarpal.