Table 1.
Patient characteristics before and after propensity score matching
| Before Matching | After Matching | |||||
|---|---|---|---|---|---|---|
| Reported marijuana use | Reported marijuana use | |||||
| No | Yes | P-value | No | Yes | P-value | |
| n= 109,507 (96.5%) | n= 3,970 (3.5%) | n= 3,803 (50.0%) | n= 3,803 (50.0%) | |||
|
| ||||||
| Men (%) | 73194 (66.8) | 3144 (79.2) | <0.001 | 3015 (79.3) | 3003 (79.0) | 0.756 |
| Age (mean (SD)) | 65.81 (11.81) | 53.85 (9.59) | <0.001 | 53.93 (10.03) | 53.91 (9.61) | 0.926 |
| Length of stay, days (Median (IQR)) | 2 (1, 3) | 2 (1, 3) | 0.527 | 2 (1, 3) | 2 (1, 3) | 0.766 |
| Race, n (%) | ||||||
| American Indian or Alaskan Native | 374 (0.3) | 23 (0.6) | 0.018 | 24 (0.6) | 20 (0.5) | 0.650 |
| Asian | 1271 (1.2) | 6 (0.2) | <0.001 | 5 (0.1) | 6 (0.2) | 1.000 |
| Black or African American | 11570 (10.6) | 1013 (25.5) | <0.001 | 963 (25.3) | 980 (25.8) | 0.674 |
| Native Hawaiian or Pacific Islander | 78 (0.1) | 3 (0.1) | 1 | 2 (0.1) | 2 (0.1) | 1.000 |
| White | 94732 (86.5) | 2860 (72.0) | <0.001 | 2743 (72.1) | 2732 (71.8) | 0.798 |
| Hispanic or Latino, n (%) | 1475 (1.4) | 60 (1.5) | 0.422 | 59 (1.6) | 58 (1.5) | 0.993 |
| Payer, n (%) | ||||||
| Indian Health Service | 55 (0.1) | 3 (0.1) | 0.641 | 3 (0.1) | 3 (0.1) | 1.000 |
| Medicaid | 13437 (12.6) | 1326 (37.3) | <0.001 | 1250 (36.5) | 1274 (37.4) | 0.446 |
| Medicare | 64112 (60.2) | 1257 (35.4) | <0.001 | 1154 (33.7) | 1213 (35.6) | 0.099 |
| Military Health Care | 1704 (1.6) | 64 (1.8) | 0.385 | 74 (2.2) | 57 (1.7) | 0.168 |
| Non-US Insurance | 255 (0.2) | 14 (0.4) | 0.097 | 16 (0.5) | 11 (0.3) | 0.450 |
| None | 3076 (2.8) | 418 (10.5) | <0.001 | 374 (9.8) | 394 (10.4) | 0.470 |
| Private Health Insurance | 78531 (73.8) | 1873 (52.7) | <0.001 | 1836 (53.5) | 1814 (53.2) | 0.802 |
| State-Specific Plan | 434 (0.4) | 36 (1.0) | <0.001 | 27 (0.8) | 32 (0.9) | 0.585 |
| Co-morbidities, n (%) | ||||||
| Cerebrovascular Disease | 17370 (15.9) | 422 (10.6) | <0.001 | 391 (10.3) | 409 (10.8) | 0.523 |
| Chronic Lung Disease | 21087 (19.3) | 908 (22.9) | <0.001 | 877 (23.1) | 881 (23.2) | 0.935 |
| Current/Recent Smoker* | 29375 (26.8) | 2896 (73.0) | <0.001 | 2804 (73.7) | 2780 (73.1) | 0.551 |
| Currently on Dialysis | 2794 (2.6) | 86 (2.2) | 0.143 | 79 (2.1) | 85 (2.2) | 0.693 |
| Diabetes Mellitus | 43532 (39.8) | 1113 (28.0) | <0.001 | 1063 (28.0) | 1073 (28.2) | 0.818 |
| Dyslipidemia | 88705 (81.1) | 2731 (68.9) | <0.001 | 2655 (69.9) | 2629 (69.2) | 0.522 |
| Hypertension | 93841 (85.7) | 3077 (77.5) | <0.001 | 2953 (77.6) | 2960 (77.8) | 0.869 |
| Peripheral Artery Disease | 17058 (15.6) | 516 (13.0) | <0.001 | 511 (13.4) | 502 (13.2) | 0.787 |
| Prior CABG | 20149 (18.4) | 389 (9.8) | <0.001 | 346 (9.1) | 380 (10.0) | 0.198 |
| Prior Heart Failure | 19503 (17.8) | 510 (12.8) | <0.001 | 493 (13.0) | 498 (13.1) | 0.892 |
| Prior Myocardial Infarction | 38122 (34.8) | 1431 (36.0) | 0.115 | 1386 (36.4) | 1380 (36.3) | 0.905 |
| Prior PCI | 50497 (46.1) | 1520 (38.3) | <0.001 | 1478 (38.9) | 1473 (38.7) | 0.925 |
| Prior Valve Surgery/Procedure | 2159 (2.0) | 37 (0.9) | <0.001 | 32 (0.8) | 37 (1.0) | 0.629 |
| Coronary Artery Disease Presentation, n (%) | <0.001 | 0.924 | ||||
| No symptom, no angina | 3963 (3.6) | 66 (1.7) | 62 (1.6) | 66 (1.7) | ||
| Non-STEMI | 25536 (23.3) | 1193 (30.1) | 1149 (30.2) | 1165 (30.6) | ||
| ST-Segment Elevation MI (STEMI) or equivalent | 17392 (15.9) | 1084 (27.3) | 976 (25.7) | 984 (25.9) | ||
| Stable angina | 10043 (9.2) | 216 (5.4) | 232 (6.1) | 211 (5.5) | ||
| Symptom unlikely to be ischemic | 2706 (2.5) | 59 (1.5) | 62 (1.6) | 58 (1.5) | ||
| Unstable angina | 49843 (45.5) | 1351 (34.0) | 1322 (34.8) | 1318 (34.7) | ||
CABG indicates coronary artery bypass grafting; PCI, percutaneous coronary intervention; and STEMI, ST-Elevation Myocardial infarction
*
Recent smoker is defined as smoking within 1 year.