History and examination findings of the study cohort
| History and examination | Prevalence (%)(n = 425) |
|---|---|
| Number of hours since chest pain started | |
| <2 days | 55.2 |
| 2 days to 1 week | 27.2 |
| >1 week | 17.6 |
| Subjective dyspnoea | 62.8 |
| Near syncope | 15.8 |
| Smoker | 58.4 |
| Heart rate >100 beats per minute | 4.9 |
| Respiratory rate >16 breaths per minute | 25.4 |
| Oxygen saturations <95 on air | 5.4 |
| Pao2 <10 kPa on air | 22.6 |
| Temperature >37.2 °C | 11.5 |
| White cell count >11.0×109/l | 20.2 |
| Abnormal electrocardiogram | 14.1 |
| Abnormal chest x ray | 13.4 |
| Clinical signs of deep vein thrombosis | 5.2 |