Alshahrani et al reported a simple score for identifying a patient with obstructive coronary artery disease and a normal Agatston score. The authors are from multiple institutions in Canada, the United States and Europe.
Patient selection: Agatston score 0 and history of coronary artery disease
Outcome: obstructive coronary artery disease (CAD) was defined as luminal occlusion >= 50%.
Parameters:
(1) age of the patient in years
(2) sex
(3) typical chest pain
(4) dyslipidemia
(5) hypertension
(6) family history of coronary artery disease
(7) diabetes mellitus
Parameter
Finding
Points
age of the patient
< 30 years
0
30 to 39 years
1
40 to 49 years
2
50 to 59 years
3
60 to 69 years
4
>= 70 years
5
sex
female
0
male
4
typical chest pain
no
0
yes
5
dyslipidemia
no
0
yes
3
hypertension
no
0
yes
1
family history
no
0
yes
1
diabetes mellitus
no
0
yes
1
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 20
Total Score
Probability Obstructive CAD
<= 6
low
7 to 13
intermediate
>= 14
high
Performance:
• The area under the ROC curve is 0.70.
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