|
| | Known etiology (n = 68) | Unknown etiology (n = 157) | value |
|
| Age, years [median (percentiles 25–75)] | 72 (62–83) | 75 (61–86) | 0.232 |
| Sex (male) | 42 (62%) | 90 (57%) | 0.535 |
| HBP, n (%) | 36 (53%) | 99 (63%) | 0.155 |
| DM, n (%) | 13 (19%) | 45 (29%) | 0.133 |
| COPD, n (%) | 22 (32%) | 35 (22%) | 0.111 |
| Asma, n (%) | 2 (3%) | 13 (8%) | 0.242 |
| Chronic heart disease, n (%) | 18 (27%) | 50 (32%) | 0.420 |
| Chronic renal disease, n (%) | 7 (10%) | 31 (20%) | 0.082 |
| Chronic neurological disease, n (%) | 13 (19%) | 46 (29%) | 0.111 |
| Chronic hepatic disease, n (%) | 6 (9%) | 11 (7%) | 0.636 |
| Active oncohematological disease, n (%) | 8 (12%) | 13 (8%) | 0.409 |
| Immunocompromised patients, n (%) | 8 (12%) | 16 (10%) | 0.725 |
| HIV, n (%) | 5 (3%) | 1 (1.5%) | 0.671 |
| Charlson score [median (percentiles 25–75)] | 5 (3–6) | 5 (3–7) | 0.360 |
| Leucocytes (×103) [median (percentiles 25–75)] | 13.9 (10–18.6) | 13.2 (0.2–16.8) | 0.392 |
| PCR (n = 220) [median (percentiles 25–75)] | 15.3 (5.5–25.3) | 10.3 (4.2–20.9) | 0.075 |
| PCT (n = 70) [median (percentiles 25–75)] | 0.6 (0.11−2.69) | 0.24 (0.12−1) | 0.261 |
| NEWS2 score [median (percentiles 25–75)] | 4 (2–7) | 4 (3–6) | 0.621 |
| Antibiotic duration (days) | 11 (8–16) | 9 (7–11) | 0.000 |
| Admission duration (days) | 10 (6–16) | 7 (4–11) | 0.004 |
| Bronchoaspiration, n (%) | 7 (10%) | 37 (24%) | 0.021 |
| ICU, n (%) | 11 (16%) | 3 (2%) | 0.000 |
| Intubation, n (%) | 8 (12%) | 3 (2%) | 0.004 |
| Intubation duration (days), n (%) | 7 (2–9) | 2 (1–3) | 0.222 |
| High flow oxygen, n (%) | 2 (3%) | 5 (3%) | 1.000 |
| High flow oxygen duration (days) | 1 | 4 (2–7) | 0.267 |
| Mortality, n (%) | 9 (13%) | 19 (12%) | 0.813 |
| Transfer to sociosanitary facility, n (%) | 6 (9%) | 17 (11%) | 0.676 |
|
