Baseline characteristics prior to propensity score approaches for patients with complete data and 30 days of follow-up
| Baseline characteristics (n=1445) | Stent by drug attribute | P value | Standardised difference* | |
| DES (n=1145) | BMS (n=300) | |||
| Female | 376 (32.8%) | 100 (33.3%) | 0.871 | −0.011 |
| Age >65 years | 600 (52.4%) | 191 (63.7%) | <0.001 | −0.230 |
| Caucasian | 1095 (95.6%) | 286 (95.3%) | 0.822 | 0.014 |
| Married | 800 (69.9%) | 168 (56.0%) | <0.0001 | 0.290 |
| Risk factors | ||||
| Alcohol use | 420 (36.7%) | 90 (30.0%) | 0.031 | 0.142 |
| Illicit drug use | 67 (5.9%) | 28 (9.3%) | 0.030 | −0.132 |
| Acute MI | 400 (34.9%) | 163 (54.3%) | <0.0001 | −0.398 |
| Shock | 21 (1.8%) | 23 (7.7%) | <0.0001 | −0.277 |
| COPD | 148 (12.9%) | 58 (19.3%) | 0.005 | −0.175 |
| Diabetes mellitus | 435 (38.0%) | 102 (34.0%) | 0.203 | 0.083 |
| Dialysis | 23 (2.0%) | 8 (2.7%) | 0.484 | −0.044 |
| EF <30% | 24 (2.1%) | 10 (3.3%) | 0.208 | −0.076 |
*Standardised difference=difference in means or proportions divided by SE; imbalance defined as an absolute value >0.10 (small effect size).
COPD, chronic obstructive pulmonary disease; EF, ejection fraction; MI, myocardial infaction.