Table 3.

Performance of the different examination methods in predicting active TMJ arthritis on MRI

Test	Sensitivity (95% CI)	Specificity (95% CI)	Positive predictive value (95% CI)	Negative predictive value (95% CI)
Rheumatological examination
Patients	0.58 (0.34, 0.79)	0.82 (0.48, 0.97)	0.85 (0.54, 0.97)	0.53 (0.29, 0.76)
Joints	0.47 (0.29, 0.65)	0.75 (0.55, 0.89)	0.68 (0.45, 0.85)	0.55 (0.38, 0.71)
Orthodontic examination
Patients	0.47 (0.25, 0.71)	0.36 (0.12, 0.68)	0.56 (0.31, 0.79)	0.29 (0.1, 0.58)
Joints	0.66 (0.47, 0.81)	0.46 (0.28, 0.66)	0.58 (0.41, 0.74)	0.54 (0.33, 0.74)
US
Patients	0.33 (0.14, 0.59)	0.82 (0.48, 0.97)	0.75 (0.36, 0.96)	0.43 (0.23, 0.66)
Joints	0.23 (0.11, 0.43)	0.89 (0.71, 0.97)	0.7 (0.35, 0.92)	0.52 (0.37, 0.66)
Maximum interdental distance < 40mm
Patients	0.37 (0.17, 0.61)	1.0 (0.68, 1.00)	1.0 (0.56, 1.0)	0.48 (0.27, 0.69)
Maximum mouth opening ≤ 40 mm (corrected for overbite)
Patients	0.11 (0.02, 0.35)	0.91 (0.57, 0.995)	0.67 (0.13, 0.98)	0.37 (0.20, 0.58)
Maximum mouth opening ≤ 45 mm (corrected for overbite)
Patients	0.47 (0.25, 0.71)	0.91 (0.57, 0.995)	0.9 (0.54, 0.995)	0.5 (0.28, 0.72)