Abstract 173
Positive angiogram
Negative angiogram
Total
Pre-test
Low risk
0
1
1
Intermediate
13
37
50
High risk
56
12
68
Total
69
50
119
ETT
Inconclusive
2
3
5
Low risk
8
14
22
Intermediate risk
28
27
55
High risk
18
1
19
Total
56
45
101