| Characteristic | Patients | 30-day mortality | |
| Yes | No | ||
| Total patients n | 1206 | 119 | 1087 |
| Demographic factors | |||
| Age yrs | 69.3±16.1 | 73.4±15.0 | 68.9±16.1 |
| Age >80 yrs | 300 (25) | 46 (39) | 254 (23) |
| Males | 536 (44) | 53 (45) | 483 (44) |
| Comorbid illness | |||
| Cancer# | 282 (23) | 54 (45) | 228 (21) |
| Heart failure | 82 (7) | 15 (13) | 67 (6) |
| Chronic lung disease | 94 (8) | 15 (13) | 79 (7) |
| Clinical findings | |||
| Pulse beats·min−1 | 92.5±19.5 | 98.7±22.1 | 91.8±19.0 |
| Pulse ≥110 beats·min−1 | 226 (19) | 34 (29) | 192 (18) |
| SBP mmHg | 128.8±25.7 | 121.3±29.9 | 129.6±25 |
| SBP <100 mmHg | 103 (8) | 22 (18) | 81 (7) |
| fR ≥30 breaths·min−1 | 86 (7) | 9 (8) | 77 (7) |
| Temperature <36°C | 126 (10) | 13 (11) | 113 (10) |
| Altered mental status¶ | 17 (1) | 4 (3) | 13 (1) |
| Sa,O2 <90% | 300 (25) | 44 (37) | 256 (24) |
| PESI risk classes+ | |||
| I | 173 (14) | 4 (3) | 169 (15) |
| II | 258 (21) | 12 (10) | 246 (23) |
| III | 332 (28) | 28 (24) | 304 (28) |
| IV | 262 (22) | 35 (29) | 227 (21) |
| V | 181 (15) | 40 (34) | 141 (13) |
Data are presented as mean±sd or n (%), unless otherwise stated. SBP: systolic blood pressure; fR: respiratory frequency; Sa,O2: arterial oxygen saturation; PESI: pulmonary embolism severity index. #: active or under treatment in the previous year. ¶: defined as confusion, disorientation or somnolence. +: PESI score corresponds to the risk classes <65 (class I), 66–85 (class II), 86–105 (class III), 106–125 (class IV) and >125 (class V); patients in risk classes I and II are defined as low-risk.