Table 5

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

StatisticValue95% CI
Sensitivity0.640.43 to 0.82
Specificity0.780.72 to 0.84
Positive ikelihood ratio2.861.56 to 4.79
Negative likelihood ratio0.460.22 to 0.79
Disease prevalence0.220.15 to 0.31
Positive predictive value0.440.26 to 0.64
Negative predictive value0.890.78 to 0.95
Accuracy0.750.66 to 0.83