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Table 2 Correlation Coefficients and P Values between Each Variable and Patient Outcomes in the Learning Data Set

From: A novel scoring system for predicting the neurologic prognosis prior to the initiation of induced hypothermia in cases of post-cardiac arrest syndrome: the CAST score

Variable Good (CPC ≤ 2) n = 34 Poor (CPC ≥ 3) n = 43 r P
Age 62.3 ± 13.7 60.1 ± 17.2 0.07 0.550
Witness, n (%) 22 (91.7) 21 (65.6)   
Time until ROSC, min 20.1 ± 17.6 28.9 ± 14.8   
Witness/Time until ROSC    - 0.48 <0.001
Bystander, n (%) 19 (55.9) 24 (55.8) 0.00 0.995
Initial rhythm, shockable, n (%)a 24 (72.7) 14 (32.6) 0.40 <0.001
GCS, M ≥ 2, n (%)b, h 29 (87.9) 13 (31.7) 0.56 <0.001
Mydriasisc, h 7 (21.2) 19 (45.2) - 0.25 0.030
pHd, i 7.23 ± 0.13 6.98 ± 0.21 0.58 <0.001
Lactate (mmol/dL)e, i 8.0 ± 4.0 11.0 ± 4.2 - 0.35 0.003
WBC (103/ L)i 10.3 ± 3.4 11.4 ± 4.8 - 0.13 0.263
CRP (mg/dL)f, i 0.20 ± 0.30 1.83 ± 4.24 - 0.25 0.031
Glucose (mg/dL)i 253 ± 89 266 ± 119 - 0.06 0.601
Creatinine (mg/dL)i 2.1 ± 3.2 2.3 ± 3.3 -0.03 0.769
Albumin (g/dL)i 3.9 ± 0.4 3.2 ± 0.7 0.48 <0.001
Hemoglobin (g/dL)i 14.1 ± 1.8 12.3 ± 2.5 0.37 <0.001
GWRg, j 1.26 ± 0.05 1.21 ± 0.08 0.33 0.005
  1. Data are presented as mean ± standard deviation or as absolute frequencies with percentages
  2. Missing data; a n = 1 and 0; b n = 1 and 2; c n = 1 and 1; d n = 1 and 3; e n = 1 and 6; f n = 1 and 2; g n = 3 and 5
  3. hThese data was obtained just after return of spontaneous circulation
  4. iThese data was obtained about 15 min before and after return of spontaneous circulation
  5. jThe CT was performed within 6 h after the patient had the return of his or her spontaneous circulation
  6. r correlation ratio, ROSC return of spontaneous circulation, GCS Glasgow Coma Scale, CRP C-reactive protein, GWR gray matter attenuation to white matter attenuation ratio
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