Significant CHD |
Usual symptoms during test | | | | | | NS | |
Magnitude of ST depression | | | | | | NS | 0.621 |
Time of first occurrence of ST depression (s) | 68.0 (318–710) | 96.0 (213–317) | 93.5 (161–212) | 100.0 (91–160) | 96.0 (<90) | NS | 0.795 |
Time of last abnormal ECG in recovery (s) | 70.8 (<39.0) | 87.5 (39–240) | 96.0 (241–361) | 100.0 (362–500) | 100.0 (501–2603) | 0.045 | 0.837 |
Time of first normal ECG in recovery (s)* | 70.6 (<57) | 78.9 (57–180) | 93.8 (181–360) | 100.0 (361–517) | 100.0 (518–1040) | NS | 0.814 |
Duration of exercise test (s) | 72.0 (470–769) | 92.0 (376–469) | 92.0 (275–375) | 96.0 (210–274) | 100.0 (<210) | NS | 0.783 |
Maximum heart rate (beats/min) | 72.0 (154–204) | 92.0 (144–153) | 95.8 (131–143) | 96.2 (123–13) | 95.8 (<122) | NS | 0.752 |
Target heart rate (%) | 79.2 (100.6–127) | 87.5 (93.0–100.5) | 96.0 (85.0–92.9) | 96.0 (77.8–84.9) | 91.7 (<77.7) | NS | 0.677 |
Increase in systolic blood pressure (mm Hg) | 88.0 (71–127) | 92.0 (49–70) | 88.0 (36–48) | 91.7 (25–35) | 92.0 (<25) | NS | 0.536 |
Duke treadmill score | 72.7 (−4 to 3) | 88.5 (−7 to −5) | 93.8 (−11 to −8) | 95.2 (−14 to −12) | 100.0 (<−14) | NS | 0.793 |
Age (years) | 83.3 (40.1–55.6) | 76.0 (55.6–63.4) | 95.8 (63.7–67.6) | 96.0 (67.6–70.7) | 100.0 (71.3–79.8) | NS | 0.733 |
Prognostic coronary heart disease |
Maximum heart rate (beats/min) | 40.0 | 52.0 | 70.8 | 50.0 | 70.8 | NS | 0.587 |
Time of last abnormal ECG in recovery (s) | 33.3 | 50.0 | 64.0 | 66.7 | 70.8 | 0.024 | 0.663 |
Time of first normal ECG in recovery (s) | 29.4 | 36.8 | 56.3 | 64.7 | 66.7 | NS | 0.670 |
Duration of exercise test (s) | 32.0 | 52.0 | 44.0 | 76.0 | 79.2 | NS | 0.689 |
Age (years) | 41.7 | 36.0 | 83.3 | 64.0 | 54.2 | NS | 0.600 |
Duke treadmill score | 45.5 | 57.7 | 53.1 | 52.4 | 73.9 | NS | 0.600 |