Baseline demographic and clinical characteristics of patients
| Total | Death | |||
| N (978) | No (796) N (%) | Yes (182) N (%) | P value* | |
| Age (mean) | 64.5 | 61.4 | 78.2 | <0.001 |
| Gender | ||||
| Male | 531 | 420 (79.1%) | 111 (20.9%) | 0.044 |
| Female | 447 | 376 (84.1%) | 71 (15.9%) | |
| Charlson Comorbidity Index | ||||
| 0 | 181 | 180 (99.4%) | 1 (0.6%) | <0.001 |
| 1 | 137 | 136 (99.3%) | 1 (0.7%) | |
| 2 | 121 | 113 (93.4%) | 8 (6.6%) | |
| 3 | 130 | 103 (79.2%) | 27 (20.8%) | |
| 4 | 114 | 86 (75.4%) | 28 (24.6%) | |
| 5 | 96 | 68 (70.8%) | 28 (29.2%) | |
| 6 | 76 | 45 (59.2%) | 31 (40.8%) | |
| 7 | 41 | 24 (58.5%) | 17 (41.5%) | |
| 8 | 30 | 17 (56.7%) | 13 (43.3%) | |
| 9 | 18 | 8 (44.4%) | 10 (55.6%) | |
| 10 | 14 | 9 (64.3%) | 5 (35.7%) | |
| >10 | 20 | 7 (35.0%) | 13 (65.0%) | |
| Smoking status | ||||
| Active | 41 | 32 (78.0%) | 9 (22.0%) | <0.001 |
| Ex | 221 | 156 (70.6%) | 65 (29.4%) | |
| No | 704 | 608 (86.4%) | 108 (15.3%) | |
| Obesity | ||||
| No | 815 | 660 (81.0%) | 155 (19.0%) | 0.462 |
| Yes | 163 | 136 (83.4%) | 27 (16.6%) | |
| Arterial hypertension | ||||
| No | 514 | 468 (91.1%) | 46 (8.9%) | <0.001 |
| Yes | 464 | 328 (70.7%) | 136 (29.3%) | |
| Diabetes | ||||
| No | 788 | 658 (83.5%) | 130 (16.5%) | 0.001 |
| Yes | 190 | 138 (72.6%) | 52 (27.4%) | |
| Number of chronic treatments | ||||
| 0 | 286 | 269 (94.1%) | 17 (5.9%) | <0.001 |
| 1 | 92 | 86 (93.5%) | 6 (6.5%) | |
| 2 | 77 | 72 (93.5%) | 5 (6.5%) | |
| 3 | 78 | 63 (80.8%) | 15 (19.2%) | |
| 4 | 61 | 47 (77.0%) | 14 (23.0%) | |
| 5 | 66 | 53 (80.3%) | 13 (19.7%) | |
| 6 | 51 | 38 (74.5%) | 13 (25.5%) | |
| 7 | 51 | 35 (68.6%) | 16 (31.4%) | |
| 8 | 56 | 40 (71.4%) | 16 (28.6%) | |
| 9 | 44 | 21 (47.7%) | 23 (52.3%) | |
| 10 | 32 | 21 (65.6%) | 11 (34.4%) | |
| >10 | 84 | 51 (60.7%) | 33 (39.3%) | |
| Intensive care unit admission | 132 | 109 (82.6%) | 23 (17.4%) | 0.707 |