Table 1.
Clinical characteristics and CAD pre-test probability calculations.
| Total (n = 1305) |
Uncertain (n = 43; 3.3%) |
Appropriate (n = 496; 38%) |
Inappropriate (n = 766; 56.9%) |
p Value | |
|---|---|---|---|---|---|
| Mean age, years | 63.9 ± 9.6 | 52.6 ± 5.2 | 62.2 ± 9.3 | 65.6 ± 9.4 | <0.001 |
| Female | 416 (31.9) | 43 (100.0) | 234 (47.2) | 139 (18.1) | <0.001 |
| BMI | 27.2 ± 4.4 | 27.5 ± 5.8 | 26.9 ± 4.7 | 27.3 ± 4.0 | 0.75 |
| Dyslipidemia LDL |
874 (67.0) 121.1 ± 33.2 |
23 (53.5) 118.3 ± 49.2 |
346 (69.8) 135.2 ± 38.0 |
505 (65.9) 117.7 ± 34.2 |
0.05 |
| Hypertension Systolic BP |
987 (75.6) 140.3 ± 16.7 |
28 (65.1) 136.9 ± 19.1 |
370 (74.6) 140.1 ± 17.1 |
589 (76.9) 141.3 ± 16.4 |
0.10 |
| Smoker | 543 (41.6) | 21 (48.8) | 218 (44.0) | 304 (39.7) | 0.33 |
| Diabetes mellitus HbA1c |
180 (13.8) 5.6 ± 0.6 |
7 (16.3) 5.8 ± 1.1 |
61 (12.3) 5.7 ± 0.8 |
112 (14.6) 5.5 ± 0.7 |
0.77 |
| Positive FH | 429 (32.9) | 21 (48.8) | 171 (34.5) | 237 (30.9) | 0.099 |
| Referring sources | 0.89 | ||||
| Tertiary | 92 (7.0) | 4 (9.3) | 31 (6.3) | 57 (7.4) | |
| Secondary | 109 (8.4) | 3 (7.0) | 43 (8.7) | 63 (8.2) | |
| Primary | 1104 (84.6) | 36 (83.7) | 422 (85.1) | 646 (84.3) | |
| CCS | <0.001 | ||||
| Angina classification | |||||
| 0 | 533 (40.8) | 8 (18.6) | 113 (22.8) | 412 (53.8) | |
| I | 301 (23.1) | 28 (65.1) | 211 (42.5) | 62 (8.1) | |
| II | 240 (18.4) | 7 (16.3) | 148 (29.8) | 85 (11.1) | |
| III | 117 (8.9) | 0 | 19 (3.8) | 98 (12.8) | |
| IV | 114 (8.7) | 0 | 5 (1.0) | 109 (14.2) | |
| NYHA | <0.001 | ||||
| 0 | 25 (1.9) | 1 (2.3) | 11 (2.2) | 13 (1.7) | |
| I | 761 (58.3) | 18 (41.9) | 190 (38.3) | 553 (72.2) | |
| II | 414 (31.7) | 21 (48.8) | 256 (51.6) | 137 (17.9) | |
| III | 92 (7.0) | 3 (7.0) | 338 (6.7) | 56 (7.3) | |
| IV | 13 (1.0) | 0 | 6 (1.2) | 7 (0.9) | |
| Pre-test probability | <0.001 | ||||
| Low | 413 (31.6) | 43 (100.0) | 0 | 370 (48.3) | |
| Intermediate | 496 (38.0) | 0 | 496 (100.0) | 0 | |
| High | 396 (30.3) | 0 | 0 | 396 (51.7) |
Abbreviations: BMI—body mass index, BP—blood pressure, CCS—Canadian Cardiovascular Society scale, FH—family history, LDL—low-density lipoprotein, NYHA—New York Heart Association score. Presented data are mean values and standard deviations for variables approximately normal.