Table 1

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 attributeP valueStandardised
difference*
DES (n=1145)BMS (n=300)
Female376 (32.8%)100 (33.3%)0.871−0.011
Age >65 years600 (52.4%)191 (63.7%)<0.001−0.230
Caucasian1095 (95.6%)286 (95.3%)0.8220.014
Married800 (69.9%)168 (56.0%)<0.00010.290
Risk factors
 Alcohol use420 (36.7%)90 (30.0%)0.0310.142
 Illicit drug use67 (5.9%)28 (9.3%)0.030−0.132
 Acute MI400 (34.9%)163 (54.3%)<0.0001−0.398
 Shock21 (1.8%)23 (7.7%)<0.0001−0.277
 COPD148 (12.9%)58 (19.3%)0.005−0.175
 Diabetes mellitus435 (38.0%)102 (34.0%)0.2030.083
 Dialysis23 (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.