Table 1:
Demographic and Clinical Characteristics of Study Sample
| Variables | All Patients (n=750) |
NST Changes | |
|---|---|---|---|
| Present (n=131) |
Absent (n=619) |
||
| Demographics | |||
| Age (years) | 59 ± 17 | 65 ± 17*** | 58 ± 16 |
| Sex (Male) | 433 (58%) | 85 (65%) | 348 (56%) |
| Race (Black) | 301 (40%) | 58 (44%) | 243 (39%) |
| ACS Risk Factors | |||
| Obesity (BMI > 30) | 285 (38%) | 41 (31%) | 244 (40%) |
| Ever Smoked | 436 (58%) | 70 (53%) | 366 (59%) |
| Hypertension | 519(70%) | 103(79%)** | 416(68%) |
| Diabetes Mellitus | 196(26%) | 41 (32%) | 155(25%) |
| Hyperlipidemia | 259 (35%) | 53(41%) | 206 (33%) |
| CAD | 248 (33%) | 65 (50%) *** | 183(30%) |
| History of Ml | 205 (28%) | 42 (32%) | 163(27%) |
| Diagnosed HF | 130(18%) | 42 (32%) *** | 88 (14%) |
| Prior PCI | 177(24%) | 41 (32%) * | 136(22%) |
| Prior CABG | 73(10%) | 30 (23%) *** | 43 (7%) |
| Clinical Presentation | |||
| Chest Pain | 645 (86%) | 110(85%) | 535 (87%) |
| Shortness of Breath | 215(29%) | 43(31%) | 172(28%) |
| Positive Initial Troponin | 95(13%) | 25(19%)* | 70(11%) |
| ACS event | 115(15%) | 24(18%) | 91 (15%) |
| PCI Done | 65 (9%) | 11 (9%) | 54 (9%) |
| CABG Done | 9(1.2%) | 2 (1.5%) | 7(1.1%) |
| LOS (median [IQR]) | 1.0(0.5–3.0) | 2.0(1.0–4.0)* | 1.0(0.5–3.0) |
| 30-Day Follow Up | |||
| 30-day readmission | 146(20%) | 29 (22%) | 117(19%) |
| 30-day MACE | 40 (5.3%) | 13(9.9%)** | 27 (4.4%) |
*
p < 0.05;
**
p < 0.01;
***
p < 0.001
CAD: coronary artery disease; MI: myocardial infarction; HF: heart failure; PCI: percutaneous coronary intervention; CABG: coronary artery bypass graft; ACS: acute coronary syndrome; LOS: length of stay; MACE: major adverse cardiac events.