Exercise test findings and referral rates for coronary arteriography and myocardial perfusion imaging for subjects from the open access chest pain clinic
| Exercise test finding | Frequency (%) | Referred for coronary arteriography (%) | Referred for myoview scan (%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male (n=921) | Female (n=601) | OR (95% CI) | Male (n=286) | Female (n=137) | OR (95% CI) | Male (n=76) | Female (n=31) | OR (95% CI) | |||||
| ⩾ 2 mm ST depression | 14.3 | 5.5 | 2.9 (1.9 to 4.3)1-160 | 90.2 | 90.9 | 0.9 (0.2 to 3.4) | 0.8 | 0 | |||||
| < 2 mm ST depression | 15.4 | 14.1 | 1.1 (0.8 to 1.5) | 69.0 | 68.2 | 1.0 (0.6 to 1.8) | 0.7 | 10.6 | 0.1 (0.0 to 0.5)1-160 | ||||
| ⩾ 1 mm ST depression | 23.3 | 13.5 | 2.0 (1.5 to 2.6)1-160 | 85.1 | 85.0 | 1.0 (0.5 to 2.1) | 0.5 | 1.2 | 0.4 (0.0 to 6.0) | ||||
| < 1 mm ST depression | 6.4 | 6.3 | 1.0 (0.7 to 1.5) | 57.6 | 52.6 | 1.2 (0.5 to 2.8) | 1.7 | 21.1 | 0.1 (0.0 to 0.5)1-165 | ||||
| Other ECG changes1-151 | 2.3 | 2.5 | 0.9 (0.5 to 1.8) | 66.7 | 46.7 | 2.3 (0.6 to 8.9) | 0 | 13.3 | 0.9 (0.7 to 1.1) | ||||
| Pain but no ECG change | 11.1 | 10.6 | 1.0 (0.8 to 1.5) | 46.1 | 37.5 | 1.4 (0.8 to 2.7) | 3.9 | 12.5 | 0.3 (0.1 to 1.0)1-150 | ||||
| No pain and no ECG change | 56.9 | 67.2 | 0.6 (0.5 to 0.8)1-160 | 9.5 | 9.4 | 1.0 (0.7 to 1.6) | 3.2 | 7.9 | 0.4 (0.2 to 0.7)1-165 | ||||
| Stage exercise test stopped1-152 | |||||||||||||
| Stage I and II | 16.0 | 29.8 | 0.4 (0.3 to 0.6)1-160 | 29.3 | 17.9 | 1.9 (1.0 to 3.8) | 9.8 | 15.2 | 0.6 (0.2 to 1.5) | ||||
| Stage III and IV | 84.0 | 70.2 | 2.2 (1.6 to 3.1)1-160 | 5.1 | 4.5 | 1.1 (0.6 to 2.3) | 2.1 | 3.4 | 0.6 (0.2 to 1.5) | ||||
↵1-151 ST elevation, T wave inversion, or arrhythmia (in the absence of ST depression).
↵1-152 For subjects without any ECG changes or pain and whose exercise test was the full Bruce protocol (511 men and 375 women).
↵1-150 p < 0.05;
↵1-160 p < 0.01;
↵1-165 p < 0.001.
CI, confidence interval; OR, odds ratio.