Table 1

 Sensitivity and specificity of an ED screening tool among patients with respiration rate complaints

CAP+CAP−Total
Prevalence 10% (95% CI 8.9 to 11.6); sensitivity 90% (95% CI 85 to 94); specificity 76% (95% CI 74 to 78); positive predictive value 30% (95% CI 26 to 33); negative predictive value 99% (95% CI 98 to 99); positive likelihood ratio 3.72 (95% CI 3.39 to 4.09); negative likelihood ratio 0.13 (95% CI 0.08 to 0.19).
ED screen+179425604
ED screen−1913251344
Total19817501948