Table 1.
Baseline demographic, clinical and angiographic characteristics of patients before and after Propensity Score Matching.
| Parameter | Before Propensity Score matching |
p Value | After Propensity Score matching |
p Value | ||
|---|---|---|---|---|---|---|
| Imported DES (1539) | Indian DES (1856) | Imported DES (1310) | Indian DES (1310) | |||
| Age years (mean ± SD). | 57.9 (10.2) | 55.56 (10.5) | <0.001 | 57 (10.1) | 56.9 (10.1) | 0.664 |
| Male Sex − no. (%) | 1246 (80.1%) | 1435 (77.3%) | <0.05 | 1028 (78.4%) | 1039 (79.3%) | 0.632 |
|
LVEF (%)α (Mean ± SD) |
55.5 (11.1) | 53.86 (11.6) | <0.001 | 54.9 (11.2) | 55 (11.3) | 0.802 |
| Primary PCI£ | 313 (20.3%) | 498 (26.8%) | <0.001 | 294 (22.4%) | 270 (20.6%) | 0.274 |
| ACS# | 873 (56.8%) | 1229 (66%) | <0.001 | 800 (61.1%) | 798 (60.9%) | 0.968 |
| Stable Angina | 246 (16%) | 203 (11%) | <0.001 | 170 (13.3%) | 166 (12.7%) | 0.861 |
| Diabetes Mellitus − no (%) | 717 (46.6%) | 778 (41.7%) | <0.01 | 600 (45.8%) | 577 (44%) | 0.388 |
| Hypertension − no (%) | 881 (57.2%) | 1049 (56.5%) | 0.75 | 750 (57.3%) | 749 (57.2%) | 1.0 |
| Tobacco consumption − no. (%) | 203 (13.1%) | 373 (20%) | <0.001 | 196 (15%) | 198 (15.1%) | 0.956 |
|
1 vessel disease§ – no. (%) |
769 (50%) | 992 (53.4%) | <0.05 | 682 (52.1%) | 664 (50.7%) | 0.506 |
|
2 vessel disease§ – no. (%) |
524 (34%) | 651 (35%) | 0.72 | 452 (34.5%) | 479 (36.6%) | 0.289 |
|
3 vessel disease§ – no. (%) |
246 (16%) | 213 (11.5%) | <0.001 | 176 (13.4%) | 167 (12.7%) | 0.643 |
|
LAD$ - no. (%) |
841 (54.6%) | 991 (53.3%) | 0.578 | 718 (54.8%) | 708 (50.4%) | 0.724 |
Foot Notes: This table shows the difference in baseline characteristics between Indian and Imported DES groups. Before propensity score matching, there are significant differences between the two groups in most of the parameters. After propensity score matching, there is no significant difference between the two groups and they became comparable.
α LVEF is Left ventricular ejection fraction as measured during hospital admission.
£ Primary PCI − coronary intervention was done as an emergency primary procedure for ST elevation myocardial Infarction.
# ACS acute coronary syndrome includes ST elevation and non ST elevation myocardial infarction and unstable angina.
§ Number of vessels diseased in the patient.
$ LAD indicates that Left Anterior Descending Artery is the culprit vessel that was intervened.
P value less than 0.05 is considered significant.