Table 3.
ETT Indications and Results
| Entire Cohort (N = 616) | ADT (n = 150) | Non-ADT (n = 466) | p Value | ADT ≤6 Months (n = 99) | ADT >6 Months (n = 51) | p Value | |
|---|---|---|---|---|---|---|---|
| Indication for ETT∗ | |||||||
| Chest pain | 166 (27.0) | 40 (26.7) | 126 (27.0) | 1.000 | 25 (25.3) | 15 (29.4) | 0.697 |
| Dyspnea | 94 (15.3) | 24 (16.0) | 70 (15.0) | 0.794 | 16 (16.2) | 8 (15.7) | 1.000 |
| Arrhythmia | 40 (6.5) | 12 (8.0) | 28 (6.0) | 0.445 | 8 (8.1) | 4 (7.8) | 1.000 |
| Other | 316 (51.3) | 74 (49.3) | 242 (51.9) | 0.638 | 50 (50.5) | 24 (47.1) | 0.732 |
| CRF | |||||||
| Exercise duration, mins | 7.9 ± 2.8 | 7.0 ± 2.4 | 8.2 ± 2.9 | <0.001 | 7.3 ± 2.5 | 6.5 ± 2.2 | 0.083 |
| METs completed | 9.5 ± 3.0 | 8.5 ± 2.5 | 9.8 ± 3.1 | <0.001 | 8.7 ± 2.6 | 8.1 ± 2. 3 | 0.127 |
| Good CRF (METs >8) | 391 (63.5) | 77 (51.3) | 314 (67.4) | <0.001 | 54 (54.6) | 23 (45.1) | 0.304 |
| Reduced CRF (METs ≤8) | 225 (36.5) | 73 (48.7) | 152 (32.6) | <0.001 | 45 (45.4) | 28 (54.9) | 0.304 |
| Heart rate response, beats/min | |||||||
| Heart rate at rest | 66 ± 13 | 65 ± 13 | 66 ± 13 | 0.275 | 63 ± 12 | 67 ± 14 | 0.091 |
| Heart rate at peak | 134 ± 23 | 130 ± 22 | 136 ± 24 | 0.018 | 130 ± 22 | 131 ± 22 | 0.936 |
| Blood pressure, mm Hg | |||||||
| SBP at rest | 134 ± 17 | 134 ± 18 | 134 ± 17 | 0.854 | 134 ± 16 | 135 ± 20 | 0.799 |
| DBP at rest | 77 ± 10 | 77 ± 11 | 77 ± 10 | 0.935 | 76 ± 10 | 78 ± 12 | 0.435 |
| SBP at peak exercise | 168 ± 26 | 166 ± 26 | 169 ± 26 | 0.200 | 166 ± 26 | 165 ± 27 | 0.860 |
| DBP at peak exercise | 74 ± 11 | 74 ± 12 | 75 ± 10 | 0.403 | 72 ± 12 | 76 ± 12 | 0.077 |
| ETT result | |||||||
| Normal | 450 (73.1) | 103 (68.7) | 347 (74.5) | 0.359 | 68 (68.7) | 35 (68.6) | 1.000 |
| Abnormal | 103 (16.7) | 29 (19.3) | 74 (15.9) | 19 (19.2) | 10 (19.6) | ||
| Inconclusive | 63 (10.2) | 18 (12.0) | 45 (9.6) | 12 (12.1) | 6 (11.8) | ||
Values are n (%) or mean ± SD. “Unknown” or “inconclusive” rows excluded from hypothesis tests.
CRF = cardiorespiratory fitness; DBP = diastolic blood pressure; ETT = exercise treadmill test; METs = metabolic equivalents; SBP = systolic blood pressure.
∗
Cumulative percentages may exceed 100% as categories are not mutually exclusive.