Table II lists the results of the 2 tests in patients free of significant coronary artery disease. It is evident that there is concordance in 82% (18 of 22) and discordance in 18% (4 of 22) where only the Bruce test gave a positive result. This is statistically significant (McNemar’s u = 2.0 with corresponding p = 0.046 for 2-tailed comparison)-implying a significantly higher specificity for the jogging test versus the Bruce test (86 [19 of 221 us 68% [15 of 221). Even amongpatients without significant coronary artery disease, the jogging test had significantly higher values for both peak exercise heart rate (170 f 15 us 15.5 f 19 beatslmin, p
