Table 6

Characteristics of the questionnaire used to determine sense of alarm for diagnosis of health threatening pathology in patients with chest pain in general practice

StatisticValue95% CI
Sensitivity0.580.42 to 0.75
Specificity0.680.64 to 0.73
Positive ikelihood ratio1.821.16 to 2.63
Negative likelihood ratio0.610.35 to 0.91
Disease prevalence0.200.14 to 0.27
Positive predictive value0.310.19 to 0.44
Negative predictive value0.870.79 to 0.93
Accuracy0.660.60 to 0.72