Table 2.

Statistical analysis: The correlation between concise screening items and TMJ arthritis detected by Gd-MRI was tested using Fisher’s exact test. The sensitivity, specificity, false-positive, and false-negative rate of the individual items are presented below. The highest sensitivity was measured for the combination of all items.

		TMJ Arthritis (Gd-MRI)
Item	Fisher’s Exact Test, p^* significant < 0.05	Sensitivity	Specificity	False-positive Rate	False-negative Rate
Asymmetric mouth opening	< 0.0001^*	0.65	0.78	0.22	0.35
Pain on palpation masticatory muscles	< 0.0001^*	0.61	0.71	0.29	0.39
Pain on palpation TMJ	< 0.0001^*	0.40	0.86	0.14	0.60
TMJ clicking	0.0155^*	0.23	0.87	0.13	0.77
Reduced mouth-opening capacity	0.0398^*	0.21	0.83	0.17	0.79
Combination of all 5 items	< 0.0001^*	0.85	0.54	0.46	0.15
Combination of all items without TMJ clicking	< 0.0001^*	0.85	0.54	0.46	0.15

TMJ: temporomandibular joint; Gd-MRI: gadolinium-enhanced magnetic resonance imaging.