Table 2

Accuracy in identification of patients using Sainte-Justine Pathway and PECARN rule

VariableSainte-Justine PathwayPECARN rule
High riskModerate riskLow riskTotalHigh riskModerate riskLow riskTotal
Study sample
ciTBI187126178126
No ciTBI16887117589374175
Total3495722012510175201
Sensitivity (95% CI), %96 (81–99)96 (81–99)
Specificity (95% CI), %41 (33–48)42 (35–50)
Positive predictive value (95% CI), %19 (17–22)19 (17–22)
Negative predictive value (95% CI), %99 (91–100)99 (91–100)
Positive likelihood ratio (95% CI)1.6 (1.4–1.9)1.6 (1.4–1.9)
Negative likelihood ratio (95% CI)0.09 (0.01–0.65)0.09 (0.01–0.65)
All population
ciTBI (% of risk category)18 (0.33)7 (0.01)1 (0.0007)2617 (0.37)8 (0.01)1 (0.0007)26
No ciTBI37746144922322983413692232
Total55753145022584684213702258
Sensitivity (95% CI), %96 (80–100)96 (80–100)
Specificity (95% CI), %65 (63–67)61 (59–63)
Positive predictive value (95% CI), %3.0 (2.7–3.3)2.8 (2.3–3.3)
Negative predictive value (95% CI), %99.9 (9.59–99.9)99.9 (9.59–99.9)
Positive likelihood ratio (95% CI)2.7 (2.4–3.0)2.5 (2.3–2.7)
Negative likelihood ratio (95% CI)0.06 (0.01–0.40)0.06 (0.1–0.4)
  • CI = confidence interval; ciTBI = clinically important traumatic brain injury; PECARN = Pediatric Emergency Care Applied Research Network.