Table 1. Baseline Demographic and Clinical Characteristics of LRPE Patients with Long versus Short LOS.
| Long LOS | Short LOS | Point Estimate | 95% Wald Confidence Limits | ||||
|---|---|---|---|---|---|---|---|
| (>48 hrs) Cohort | (≤48 hrs) Cohort | ||||||
| N=(1230) | N=(688) | ||||||
| N/Mean | %/SD | N/Mean | %/SD | MD/RR | |||
| Age | |||||||
| Mean, SD | 60.7 | 11.1 | 58.4 | 11.2 | 2.3 | 1.28 | 3.37 |
| Median | 63 | 61 | |||||
| 18-45 | 117 | 9.50% | 100 | 14.50% | 0.7 | 0.51 | 0.84 |
| 46-64 | 608 | 49.40% | 346 | 50.30% | 1 | 0.9 | 1.08 |
| 65+ | 505 | 41.10% | 242 | 35.20% | 1.2 | 1.03 | 1.32 |
| Sex | |||||||
| Male | 1164 | 94.60% | 628 | 91.30% | 1.04 | 1.01 | 1.06 |
| Female | 66 | 5.40% | 60 | 8.70% | 0.6 | 0.44 | 0.86 |
| Race | |||||||
| White | 786 | 63.90% | 437 | 63.50% | 1 | 0.94 | 1.08 |
| Black | 319 | 25.90% | 187 | 27.20% | 1 | 0.82 | 1.11 |
| Unknown | 94 | 7.60% | 40 | 5.80% | 1.3 | 0.92 | 1.88 |
| Other | 31 | 2.50% | 24 | 3.50% | 0.7 | 0.43 | 1.22 |
| Body Mass Index | |||||||
| Body Mass Index (kg/m2) | 31.6 | 10.3 | 31.2 | 6.6 | 0.4 | -0.49 | 1.21 |
| Past Medical History | |||||||
| Charlson Comorbidity Index Score | 1.1 | 1.5 | 0.8 | 1.3 | 0.3 | 0.16 | 0.42 |
| Myocardial Infarction | 67 | 5.50% | 33 | 4.80% | 1.1 | 0.76 | 1.7 |
| Congestive Heart Failure | 0 | 0.00% | 0 | 0.00% | |||
| Peripheral Vascular Disease | 74 | 6.00% | 40 | 5.80% | 1 | 0.71 | 1.5 |
| Dementia | 15 | 1.20% | 1 | 0.20% | 8.4 | 1.11 | 63.38 |
| Cerebrovascular Disease | 128 | 10.40% | 45 | 6.50% | 1.6 | 1.15 | 2.21 |
| Chronic Pulmonary Disease | 81 | 6.60% | 49 | 7.10% | 0.9 | 0.66 | 1.3 |
| Rheumatologic Disease or Connective Tissue Disease | 21 | 1.70% | 7 | 1.00% | 1.7 | 0.72 | 3.93 |
| Peptic Ulcer Disease | 29 | 2.40% | 4 | 0.60% | 4.1 | 1.43 | 11.49 |
| Mild Liver Disease | 16 | 1.30% | 8 | 1.20% | 1.1 | 0.48 | 2.6 |
| Hemiplegia or Paraplegia | 0 | 0.00% | 0 | 0.00% | |||
| Moderate or Severe Renal Disease | 250 | 20.30% | 98 | 14.20% | 1.4 | 1.04 | 1.96 |
| Diabetes | 360 | 29.30% | 155 | 22.50% | 1.3 | 1.1 | 1.53 |
| Any Tumor (Other Malignancy) | 18 | 1.50% | 4 | 0.60% | 2.5 | 0.55 | 11.62 |
| Moderate or Severe Liver Disease | 24 | 2.00% | 6 | 0.90% | 2.2 | 0.48 | 10.51 |
| Metastatic Solid Tumor | 0 | 0.00% | 0 | 0.00% | |||
| Diabetes + Complications | 178 | 14.50% | 64 | 9.00% | 1.6 | 1.05 | 2.3 |
| AIDS | 90 | 7.30% | 42 | 6.10% | 1.2 | 0.49 | 2.93 |
| Cardiac Dysrhythmia | 202 | 16.40% | 69 | 10.00% | 1.6 | 1.27 | 2.12 |
| Left Ventricular Dysfunction | 33 | 2.70% | 6 | 0.90% | 3.1 | 1.3 | 7.31 |
| Hospitalized Deep Vein Thrombosis | 416 | 33.80% | 208 | 30.20% | 1.1 | 0.97 | 1.28 |
| Baseline Diagnostic Tests | |||||||
| Computed Tomography Angiography | 453 | 36.80% | 496 | 72.10% | 0.5 | 0.47 | 0.56 |
| Echocardiogram | 24 | 2.00% | 13 | 1.90% | 1 | 0.53 | 2.01 |
| Lung Ventilation/Perfusion Scan | 23 | 1.90% | 18 | 2.60% | 0.7 | 0.39 | 1.32 |
| Venous Doppler Ultrasound | 210 | 17.10% | 172 | 25.00% | 0.7 | 0.57 | 0.82 |
| Clinical Marker during Index Hospitalization | |||||||
| # Patients with Troponin I, N | 469 | 38.10% | 207 | 30.10% | 1.3 | 1.11 | 1.45 |
| # Patients with Troponin T, N | 19 | 1.50% | 14 | 2.00% | 0.8 | 0.38 | 1.5 |
| # Patients with Natriuretic Peptide Testing, N | 453 | 36.80% | 223 | 32.40% | 1.1 | 1 | 1.29 |
AIDS: acquired immune deficiency syndrome; LOS: length of stay; LRPE: low-risk pulmonary embolism; MD: mean difference; RR: relative risk; SD: standard deviation