Hong et al reported 3 models for predicting outcome for a patient with subarachnoid hemorrhage. These include ECG changes as well as conventional scores. The authors are from Yonsei University in South Korea.
Patient selection: adult with subarachnoid hemorrhage
Outcome: poor if Glasgow Outcome Scale 1, 2 or 3.
Parameters:
(1) age in years
(2) WFNS grade, from 1 to 5
(3) ST depression or tall T waves
Parameter
Finding
Points
age
0.0666 * (age)
WFNS grade
1.0802 * (WFNS grade)
ST depression or tall T waves
no
0
yes
3.0820
value of X =
= SUM(points for the 3 parameters) - 6.4930
probability of poor prognosis at 6 months =
= 1 / (1 + EXP((-1) * X))
Performance:
• The area under the ROC curve is 0.91 (0.81 in external validation).
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