Nakazone et al report the CALL Risk Score for predicting mortality of a patient with heart failure in Brazil (or other country where Chaga's cardiomyopathy occurs). The authors are from Sao Jose do Rio Preto Medical School and Hospital de Base in Sao Jose do Rio Preto in Brazil.
Patient selection: Brazilian patient with heart failure
Outcome: all-cause mortality, long-term (median of 1303 days)
Parameters:
(1) age in years
(2) nature of heart failure
(3) left anterior fascicular block
(4) left ventricular ejection fraction (LVEF) in percent
Parameter
Finding
Points
age in years
< 60 years of age
0
>= 60 years of age
1
nature of heart failure
Chagas cardiomyopathy only
3
other
0
left anterior fascicular block
absent
0
present
2
LVEF
>= 40%
0
< 40%
2
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 8
• The higher the score the greater the risk of mortality.
Total Score
Risk Group
Long Term Mortality Rate
0 to 2
low
21.2%
3 to 5
intermediate
37.4%
6 to 8
high
71%
Performance:
• The area under the ROC curve is 0.69.
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