Parameter Estimate 95% CI Sensitivity 23.0% 15.2% - 32.5% Specificity 99.6% 97.6% - 99.9% Positive Predictive Value 95.8% 78.9% - 99.9% Negative Predictive Value 74.4% 69.1% - 79.3% Prevalence 30.8% 25.8% - 36.1%