Table 2:

Comparison of reported statistics for CATCH, CHALICE, and PECARN rules

Decision RuleSensitivity (95% CI)Specificity (95% CI)Reference
CATCH98.1% (94.6%–99.4%)50.1% (48.5%–51.7%)Osmond et al 201019
CHALICE98% (96%–100%)87% (86%–87%)Dunning et al 200620
PECARN100% (84%–100%)62% (59%–66%)Babl et al 201415
NPV = 99.95%–100%Kuppermann et al 200916 Mihindu et al 201417
  • Note:—NPV indicates negative predictive value.