Table 1 Baseline characteristics of patients
Clinical variables | Unmatched (complete) dataset | Matched (1:2) dataset | ||||
|---|---|---|---|---|---|---|
Inferior MI (n = 265) | Control (n = 899) | P | Inferior MI (n = 265) | Control (n = 530) | P | |
Age (years) | 58.8 ± 11.4 | 58.1 ± 9.8 | 0.364 | 58.8 ± 11.4 | 58.6 ± 10.7 | 0.816 |
Sex, n (%) |  |  | < 0.001 |  |  | 1.000 |
 Female | 34 (12.8) | 365 (40.6) | – | 34 (12.8) | 68 (12.8) | – |
 Male | 231 (87.2) | 534 (59.4) | – | 231 (87.2) | 462 (87.2) | – |
Baseline SBP (mmHg) | 128.8 ± 22.5 | 131.3 ± 30.3 | 0.143 | 128.8 ± 22.5 | 130.6 ± 31.8 | 0.345 |
Heart rate (bpm) | 74.9 ± 14.6 | 72.6 ± 19.3 | 0.045 | 74.9 ± 14.6 | 75.9 ± 15.5 | 0.376 |
CAD risk factors, n (%) | ||||||
 Smoking | 168 (63.4) | 318 (35.4) | < 0.001 | 168 (63.4) | 270 (50.9) | 0.001 |
 Diabetes | 61 (23.0) | 91 (10.1) | < 0.001 | 61 (23.0) | 62 (11.7) | < 0.001 |
 Hypertension | 124 (46.8) | 458 (50.9) | 0.263 | 124 (46.8) | 281 (53.0) | 0.099 |
 Hyperlipidemia | 24 (9.1) | 106 (11.8) | 0.267 | 24 (9.1) | 67 (12.6) | 0.156 |
 Family history of CAD | 207 (78.1) | 661 (73.5) | 0.148 | 207 (78.1) | 387 (73.2) | 0.141 |
Dominance (%) | Â | Â | 0.033 | Â | Â | 0.018 |
 Right- | 249 (94.0) | 798 (88.8) | – | 249 (94.0) | 466 (87.9) | – |
 Co- | 4 (1.5) | 27 (3.0) | – | 4 (1.5) | 21 (4.0) | – |
 Left- | 12 (4.5) | 74 (8.2) | – | 12 (4.5) | 43 (8.1) | – |