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Table 4 Performance of CAHP-Score at different cut-off points

From: Comparison of different clinical risk scores to predict long-term survival and neurological outcome in adults after cardiac arrest: results from a prospective cohort study

CAHP category  > I  > II
  Cut-off 150 points Cut-off 200 points
A: mortality at 2 years   
 Total number of patients n 229 92
 2-year survivors n (%) 37 (16.2) 5 (5.4)
 Death within 2 years n (%) 192 (83.8) 87 (94.6)
 Sensitivity 79.7 (74.0, 84.6) 36.1 (30.0, 42.5)
 Specificity 78.7 (71.9, 84.6) 97.1 (93.4, 99.1)
 PPV 83.8 (78.4, 88.4) 94.6 (87.8, 98.2)
 NPV 73.7 (66.7, 79.8) 52.3 (46.7, 57.9)
 LLR +  3.75 (2.80, 5.02) 12.56 (5.21, 30.29)
 LLR− 0.26 (0.20, 0.34) 0.66 (0.60, 0.73)
B: mortality at 6 years
 Total number of patients n 200 90
 6-year survivors n (%) 8 (4.0) 3 (3.3)
 Death within 6 years n (%) 192 (96.0) 87 (96.7)
 Sensitivity 79.7 (74.0, 84.6) 36.1 (30.0, 42.5)
 Specificity 84.3 (71.4, 93.0) 94.1 (83.8, 98.8)
 PPV 96.0 (92.3, 98.3) 96.7 (90.6, 99.3)
 NPV 46.7 (36.3, 57.4) 23.8 (18.1, 30.2)
 LLR +  5.08 (2.68, 9.63) 6.14 (2.02, 18.63)
 LLR− 0.24 (0.18, 0.32) 0.68 (0.60, 0.76)
C: neurological outcome at 2 years
 Total number of patients n 213 91
 Good neurological outcome n (%) 20 (9.4) 3 (3.3)
 Poor neurological outcome n (%) 193 (90.6) 88 (96.7)
 Sensitivity 79.1 (73.5, 84.0) 36.1 (30.0, 42.4)
 Specificity 77.5 (67.4, 85.7) 96.6 (90.5, 99.3)
 PPV 90.6 (85.9, 94.2) 96.7 (90.7, 99.3)
 NPV 57.5 (48.1, 66.5) 35.5 (29.5, 41.9)
 LLR +  3.52 (2.38, 5.21) 10.70 (3.47, 32.95)
 LLR− 0.27 (0.21, 0.35) 0.66 (0.60, 0.73)
  1. Data presented as mean (95% CI) unless otherwise specified
  2. LLR + positive likelihood ratio, LLR− negative likelihood ratio, NPV negative predictive value, OHCA Out-of-Hospital Cardiac Arrest Score, PPV positive predictive value