Variables (n=55) used in analysis
|
Demographic and outcome variables (12 variables) |
| Length of index hospital stay |
| Subsequent hospitalization (and date)? |
| Number of days in hospital |
| Death (and date) |
| Age in years |
| Sex |
| Distance from tertiary care facility >30 min drive |
| Household annual income <$20,000.00 |
| Lives alone |
| Heart failure clinic enrollment? |
| Documentation of ejection fraction within 60 days (before or after) of index admission? (yes/no/measured but no ejection fraction available) |
| Ejection fraction numerical value (if available) |
|
Medical history (16 variables) |
| Hypertension |
| Dyslipidemia |
| Congestive heart failure |
| Myocardial infarction |
| Previous percutaneous transluminal coronary angioplasty |
| Previous coronary artery bypass grafting |
| Diabetes |
| Peripheral vascular disease |
| Stroke or transient ischemic attack |
| Renal insufficiency |
| Chronic obstructive pulmonary disease |
| Malignancy |
| Dementia |
| History of alcohol abuse (ever versus none) |
| History of smoking (never, previous, current) |
| Number of comorbid illnesses |
|
Index admission (11 variables) |
| Heart rate |
| Systolic blood pressure |
| Diastolic blood pressure |
| Mean arterial pressure |
| Blood glucose |
| Serum creatinine |
| Serum troponin |
| Serum sodium |
| Serum potassium |
| Plasma hemoglobin |
| Total white blood cell count |
|
Treatment at index hospital admission (1 variable) |
| Cardiac catheterization performed? |
|
Treatment at index hospital discharge (15 variables) |
| Calcium channel blocker |
| Beta-blocker |
| Angiotensin-converting enzyme inhibitor |
| Angiotensin II receptor blocker |
| Loop diuretic |
| Spironolactone |
| Warfarin |
| Acetylsalicylic acid |
| Clopidogrel |
| Statin |
| Digoxin |
| Insulin |
| Metformin |
| Nonsteroidal anti-inflammatory drug excluding cyclo-oxygenase-2 inhibitors |
| Cyclo-oxygenase-2 inhibitors |