Table 1.
Demographic and Clinical Characteristics*
| Characteristics | Total (n = 125) | Inpatients (n = 103) | Outpatients (n = 22) |
|---|---|---|---|
| Male gender | 64 (51) | 59 (57) | 5 (23) |
| Female gender | 61 (49) | 44 (43) | 17 (77) |
| Age range, yr | 19–90 | 20–90 | 19–83 |
| CT negative | 72 (58) | 56 (54) | 16 (73) |
| Lung scan nondiagnostic | 53 (42) | 47 (46) | 6 (27) |
| Negative d-dimer | 18 (14) | 11 (11) | 7 (32) |
| Symptoms on presentation | |||
| Dyspnea | 106 (85) | 86 (83) | 20 (91) |
| Chest pain, pleuritic | 24 (19) | 14 (14) | 10 (45) |
| Chest pain, central | 8 (6) | 3 (3) | 5 (23) |
| Syncope | 25 (20) | 22 (21) | 3 (14) |
| Hemoptysis | 17 (14) | 16 (16) | 1 (5) |
| Respiratory rate > 20 breaths/min | 43 (34) | 37 (36) | 6 (27) |
| Chest wall tenderness | 13 (10) | 10 (10) | 3 (14) |
| History | |||
| Surgery in the past 6 mo | 22 (18) | 21 (20) | 1 (5) |
| Myocardial infarction | 23 (18) | 21 (20) | 2 (9) |
| Congestive heart failure | 38 (30) | 33 (32) | 5 (23) |
| COPD | 31 (25) | 26 (25) | 5 (23) |
| Cancer | 27 (22) | 24 (23) | 3 (14) |
*
Data are presented as No. (%) unless otherwise indicated.