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Table 3 Performance of the Scandinavian Neurotrauma Committee (SNC) guidelines in the validation cohort (n = 19,007)

From: External validation of the Scandinavian guidelines for management of minimal, mild and moderate head injuries in children

Outcome

Neurosurgerya

ciTBIa

Brain injury on CTa

SNC CT or observation, with outcome

32

179

262

SNC CT or observation, without outcome

7921

7775

7692

SNC discharge, with outcome

0

4

14

SNC discharge, without outcome

11,052

11,049

11,039

Sensitivity (95% CI)

100% (89.1–100)

97.8% (94.5–99.4)

94.9% (91.6–97.2)

Specificity (95% CI)

58.3% (57.5–59.0)

58.7% (58.0–59.4)

58.9% (58.2–59.6)

PPV (95% CI)

0.4% (0.3–0.6)

2.3% (1.9–2.6)

3.3% (2.9–3.7)

NPV (95% CI)

100% (100–100)

100% (99.9–100)

99.9% (99.8–99.9)

  1. CT computed tomography, PPV positive predictive value, NPV negative predictive value, ciTBI clinically important traumatic brain injury
  2. aSee text for detailed definitions