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Table 2 Operating characteristics for prehospital risk score thresholds

From: External validation of a prehospital risk score for critical illness

 

Prehospital risk score threshold

Operating characteristics

1

2

3

Sensitivity, 95 % CI

97.6 (96.8–98.3)

62.9 (60.7–65.1)

36.9 (34.8–39.1)

Specificity, 95 % CI

17.1 (16.7–17.4)

72.7 (72.3–73.1)

92.2 (91.9–92.4)

Negative predictive value, 95 % CI

99.3 (99.1–99.5)

97.6 (97.5–97.8)

96.9 (96.7–97.0)

Positive predictive value, 95 % CI

5.3 (5.1–5.5)

9.9 (9.3–10.4)

18.3 (17.1–19.5)