Postanesthetic Cold Sensibility Test as an Indicator for the Efficacy of Inferior Alveolar Nerve Block in Patients with Symptomatic Irreversible Pulpitis of Mandibular Molars
Table 5
Results of sensitivity, specificity, positive predictive value, negative predictive value, accuracy, and Youden index for the cold test with confidence intervals 95% (CI 95%) and at 57% prevalence of IANB failure.
Estimated value
95% confidence interval
Lower limit
Upper limit
Prevalence
0.57 (57%)
0.433
0.705
Sensitivity
0.87 (87%)
0.702
0.964
Specificity
0.91 (91%)
0.719
0.989
For any particular test result, the probability that it will be:
Positive
0.54 (54%)
0.397
0.672
Negative
0.46 (46%)
0.328
0.603
For any particular positive test result, the probability that it is:
True positive (positive predictive value-PPV)
0.93 (93%)
0.781
0.981
False positive
0.07 (7%)
0.012
0.242
For any particular negative test result, the probability that it is:
