Table 4.

Prognostic performance of the NICE traffic light system for detecting febrile children with a serious illness

Test performance for detecting serious illness in febrile childrenSensitivity, % (95% CI)Specificity, % (95% CI)Positive predictive value, %Negative predictive value, %
Red category only62.5 (35.4 to 84.8)64.0 (62.7 to 65.3)0.699.8
Red or amber category100 (79.4 to 100)3.0 (2.5 to 3.5)0.3100
  • NICE = National Institute for Health and Care Excellence.