Comparative effectiveness of exercise electrocardiography versus exercise echocardiography in women presenting with suspected coronary artery disease: a randomized study

Figure 1. Nomogram of the predicted exercise capacity for age in asymptomatic women.16

Figure 2. Flow diagram of eligible and randomized patients. Women are screened from the Rapid-Access Chest Pain Clinic. *In the exercise electrocardiography arm, of the 207 patients randomized three preferred to undergo exercise stress echocardiography. Consequently, 204 underwent exercise electrocardiography and whilst 209 were randomized to the exercise stress echocardiography arm, 212 underwent exercise stress echocardiography (per protocol). **Outcome (downstream resource utilization and events) analysis was based on the final randomized patients (intention to treat). ESE, exercise stress echocardiography; Ex-ECG, exercise electrocardiography.

Figure 3. Index test outcome based on tests actually performed in each arm (per protocol). This demonstrates that more patients in the exercise electrocardiography arm had inconclusive tests, in comparison to the exercise stress echocardiography arm.