Table 2

Diagnostic performance of Ottawa SAH Rule

StudyNSens (%)95% CISpec (%)95% CIFNR (%)95% CIFPR (%)95% CI
Perry et al212131100100 to 10015.313.7 to 16.80.00.0 to 0.084.783.2 to 86.3
Bellolio et al13454100100 to 1007.65.17 to 10.10.00.0 to 0.092.489.9 to 94.8
Yiangou et al25162100100 to 10038.731.4 to 46.60.00.0 to 0.061.053.4 to 68.6
Cheung et al1450094.087.4 to 10032.928.5 to 37.26.00.0 to 12.667.162.8 to 71.5
Chu et al15137100100 to 10022.415.3 to 29.40.00.0 to 0.077.670.6 to 84.7
Pathan et al19145100100 to 10044.336.1 to 52.50.00.0 to 0.055.747.5 to 63.9
Wu et al24913100100 to 10037.033.8 to 40.10.00.0 to 0.063.059.9 to 66.2
Perry et al233672100100 to 10012.711.6 to 13.90.00.0 to 0.087.386.1 to 88.4
Pooled (n=8)811499.590.8 to 10023.715.5 to 34.40.490.00 to 9.276.365.6 to 84.5
  • FNR, false negative rate; FPR, false positive rate; N, number; Sens, sensitivity; Spec, specificity.