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Baseline characteristics of the study population
| Characteristics | Patients (n = 3308) |
|---|---|
| Mean age (y) | 59.9 (±18.8) |
| Women | 1879 (56.8%) |
| Chest pain | 2256 (68.2%) |
| Dyspnea | 2313 (69.9%) |
| Hemoptysis | 160 (4.8%) |
| History of VTE | 584 (17.7%) |
| Cancer | 281 (8.5%) |
| Heart rate >100/min | 707 (21.4%) |
| Signs/symptoms of DVT | 380 (11.5%) |
| Immobilization or surgery | 178 (5.4%) |
| Alternative diagnosis less likely than PE | 1303 (39. 4%) |
| Estrogen use (OCP) | 197 (6.0%) |
