Catastrophizing Has a Better Prediction for TMD Than Other Psychometric and Experimental Pain Variables

Table 2

Unadjusted and adjusted regression analysis of TMD patients.

Independent variables	Unadjusted			Adjusted
	OR	95% CI for OR	value	OR	95% CI for OR	value
PPT finger (n = 45)	0.99	0.99–0.99	0.004	—	—	—
PPT masseter (n = 47)	0.10	0.01–0.98	0.001	—	—	—
HADS anxiety (n = 60)	1.23	1.10–1.38	0.001	—	—	—
HADS depression (n = 59)	1.63	1.27–2.08	0.001	—	—	—
Catastrophizing (n = 57)	1.90	1.34–2.72	0.001	2.42	1.22–4.79	0.01

Notes: conditional logistic regression including both unadjusted analysis (Wald test) and adjusted (stepwise forward) analysis with temporomandibular disorders (TMDs) and matched control as dependent variables and with two experimental pain measurements and three self-reported psychometric variables as independent variables. Nagelkerke R² = 0.917. Abbreviations: PPT = pressure pain threshold; HADS = Hospital Anxiety and Depression Scale; n = number of individuals included in the analysis; SD = standard deviation; OR = odds ratio; units: PPT = kPa; HADS anxiety = 0–21p; HADS depression = 0–21p; catastrophizing = 0–12p.