Table 1.

End-tidal carbon dioxide classification table over a range of cut-off thresholds

ETCO2, kPaSensitivity, %Specificity, %Positive predictive value, %Negative predictive value, %
10100065
21982565
360897581
487756692
4.399656099
51002542100
6100937100
  • ETCO2 = end-tidal carbon dioxide.