Research Article
A New Approach towards Minimizing the Risk of Misdosing Warfarin Initiation Doses
Table 1
Categorical variables in the dataset.
| Variable name | Values | Code | Frequency | Percentage |
| Race | African American | 1 | 79 | 53% | Hispanic | 2 | 34 | 23% | White | 3 | 18 | 12% | Asian | 4 | 4 | 3% | Others | 5 | 15 | 10% |
| Gender | Male | 1 | 67 | 45% | Female | 2 | 83 | 55% |
| Liver disease | Yes | 1 | 3 | 2% | No | 2 | 125 | 83% | Missing | NA | 22 | 15% |
| Warfarin Indication (WI) | A.fib | 1 | 25 | 17% | DVT | 2 | 53 | 35% | PE | 3 | 34 | 23% | TKA/THA | 4 | 13 | 9% | MVR | 5 | 1 | 1% | CVA | 6 | 4 | 3% | Others | 7 | 20 | 13% |
| Goal INR | 2-3 | 1 | 136 | 91% | 2.5–3.5 | 2 | 3 | 2% | 1.8–2.5 | 3 | 11 | 7% |
| Amiodarone | Yes | 1 | 5 | 3% | No | 2 | 144 | 96% | Missing | NA | 1 | 1% |
| Bactrim | Yes | 1 | 1 | 1% | No | 2 | 148 | 99% | Missing | NA | 1 | 1% |
| Azole | Yes | 1 | 1 | 1% | No | 2 | 148 | 99% | Missing | NA | 1 | 1% |
| Which statin? (ST) | None | 0 | 93 | 62% | Simva | 1 | 14 | 9% | Atorva | 2 | 23 | 15% | Prava | 3 | 7 | 5% | Lova | 4 | 8 | 5% | Rosuva | 5 | 4 | 3% | Missing | NA | 1 | 1% |
| Dialysis | Yes | 1 | 8 | 5% | No | 2 | 142 | 95% |
| Rheumatoid arthritis | Yes | 1 | 1 | 1% | No | 2 | 149 | 99% |
| Collagen vascular disease | Yes | 1 | 2 | 1% | No | 2 | 148 | 99% |
| Deep Vein Thrombosis (DVT) | Yes | 1 | 10 | 7% | No | 2 | 140 | 93% |
| Smoking | Current smoker | 1 | 13 | 9% | Never smoker | 2 | 107 | 71% | Ex-smoker | 3 | 30 | 20% |
| EtOH | Yes | 1 | 24 | 16% | No | 2 | 119 | 79% | Missing | NA | 7 | 5% |
| Illicit | Yes | 1 | 6 | 4% | No | 2 | 144 | 96% |
| Hypertension | Yes | 1 | 86 | 57% | No | 2 | 64 | 43% |
| Angina | Yes | 1 | 1 | 1% | No | 2 | 149 | 99% |
| Myocardial Infarction | Yes | 1 | 3 | 2% | No | 2 | 147 | 98% |
| Percutaneous Coronary Intervention (PCI) | Yes | 1 | 6 | 4% | No | 2 | 144 | 96% |
| Coronary Artery Bypass Graft (CABG) | Yes | 1 | 5 | 3% | No | 2 | 145 | 97% |
| Atrial Fibrillation or Flutter | Yes | 1 | 11 | 7% | No | 2 | 139 | 93% |
| Diabetes Mellitus (DM) | Yes | 1 | 48 | 32% | No | 2 | 102 | 68% |
| Stroke | Yes | 1 | 11 | 7% | No | 2 | 139 | 93% |
| Chronic Renal Insufficiency | Yes | 1 | 15 | 10% | No | 2 | 135 | 90% |
| Chronic Obstructive Pulmonary Disease (COPD) | Yes | 1 | 7 | 5% | No | 2 | 143 | 95% |
| Asthma | Yes | 1 | 18 | 12% | No | 2 | 132 | 88% |
| Valvular heart disease | Yes | 1 | 1 | 1% | No | 2 | 149 | 99% |
| Sickle cell | Yes | 1 | 3 | 2% | No | 2 | 147 | 98% |
| Cancer history | Yes | 1 | 12 | 8% | No | 2 | 138 | 92% |
| Pulmonary Embolism (PE) | Yes | 1 | 5 | 3% | No | 2 | 144 | 96% | Missing | NA | 1 | 1% |
| Dyslipidemia | Yes | 1 | 53 | 35% | No | 2 | 97 | 64% |
| Heart Failure (HF) | Yes | 1 | 15 | 10% | No | 2 | 135 | 90% |
| Peripheral Vascular Disease (PVD) | Yes | 1 | 7 | 4% | No | 2 | 143 | 95% |
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These patients have predominantly unknown race. |