Criteria for identifying groups at low risk for CHD in women with significant ST depression
| Criteria for low risk | Number of women (%) | Number with CHD (%) | Potential reduction in normal coronary angiograms (%) | Positive predictive value for significant CHD in women not at low risk (%) | |
|---|---|---|---|---|---|
| Significant | Prognostic | ||||
| *Similar results were obtained when maximum heart rate was used instead of time of last abnormal ECG. | |||||
| Time of last abnormal ECG <1 min | 52 (38.2) | 13 (25.0) | 6 (11.5) | 54.9 | 61.5 |
| Exercise test duration >6 min (ā©¾stage III) | 54 (39.7) | 15 (27.7) | 4 (7.4) | 54.9 | 61.0 |
| Maximum heart rate >150 beats/min | 56 (41.2) | 17 (30.3) | 6 (10.7) | 54.9 | 60.0 |
| Time of last abnormal ECG <1 min and exercise test duration >6 min* | 24 (17.6) | 4 (16.7) | 1 (4.1) | 28.2 | 54.5 |
| Time of last abnormal ECG <1 min and exercise test duration >6 min and maximum heart rate >150 beats/min | 16 (11.8) | 1 (6.3) | 0 | 21.1 | 53.3 |