| Successful (n=572) | Unsuccessful (n=264) | p value | |
| Age | 62.4±0.47 | 63.7±0.69 | 0.1 |
| Male | 433 (75.7%) | 209 (79.2%) | 0.3 |
| Diabetes | 151 (26.9%) | 74 (28.6%) | 0.6 |
| Hypertension | 320 (63.8%) | 160 (66.6%) | 0.5 |
| Hypercholesterolaemia | 281 (56.0%) | 147 (61.2%) | 0.2 |
| Previous MI | 174 (31.7%) | 94 (36.4%) | 0.2 |
| Radial access | 123 (21.5%) | 47 (17.8%) | 0.3 |
| Femoral access | 416 (72.7%) | 193 (73.1%) | 0.6 |
| Dual site access (bilateral femoral or radial + femoral) | 23 (4.0%) | 18 (6.8%) | 0.5 |