Table 1

Exercise test findings and referral rates for coronary arteriography and myocardial perfusion imaging for subjects from the open access chest pain clinic

Exercise test findingFrequency (%)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 depression14.35.52.9 (1.9 to 4.3)1-160 90.290.90.9 (0.2 to 3.4)0.80
< 2 mm ST depression15.414.11.1 (0.8 to 1.5)69.068.21.0 (0.6 to 1.8)0.710.60.1 (0.0 to 0.5)1-160
⩾ 1 mm ST depression23.313.52.0 (1.5 to 2.6)1-160 85.185.01.0 (0.5 to 2.1)0.51.20.4 (0.0 to 6.0)
< 1 mm ST depression6.46.31.0 (0.7 to 1.5)57.652.61.2 (0.5 to 2.8)1.721.10.1 (0.0 to 0.5)1-165
Other ECG changes1-151 2.32.50.9 (0.5 to 1.8)66.746.72.3 (0.6 to 8.9)013.30.9 (0.7 to 1.1)
Pain but no ECG change11.110.61.0 (0.8 to 1.5)46.137.51.4 (0.8 to 2.7)3.912.50.3 (0.1 to 1.0)1-150
No pain and no ECG change56.967.20.6 (0.5 to 0.8)1-160 9.59.41.0 (0.7 to 1.6)3.27.90.4 (0.2 to 0.7)1-165
Stage exercise test stopped1-152
 Stage I and II16.029.80.4 (0.3 to 0.6)1-160 29.317.91.9 (1.0 to 3.8)9.815.20.6 (0.2 to 1.5)
 Stage III and IV84.070.22.2 (1.6 to 3.1)1-160 5.14.51.1 (0.6 to 2.3)2.13.40.6 (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.