Table 1.
Baseline characteristics of the study population
| Patients n = 91 (%) | |
|---|---|
| Age, mean ± SD, years | 65.7 ± 10.6 |
| Gender, female | 46 (50.5) |
| Race, Caucasian | 86 (94.5) |
| Hospitalized in autumn/winter | 75 (82.4) |
| Smoking, yes | 47 (51.6) |
| Alcohol consumption, yesa | 15 (16.5) |
| Comorbidities | |
| Cardiovascular disease | 45 (49.5) |
| Respiratory disease | 20 (22) |
| Onco-haematological disease | 16 (17.6) |
| Chronic kidney disease | 14 (15.4) |
| Diabetes | 11 (12.1) |
| Chronic liver disease | 7 (7.7) |
| HIV infection | 6 (6.6) |
| Rheumatologic disease | 6 (6.6) |
| Presence of at least 2 comorbidities, yes | 68 (74.7) |
| Treatment with immunosuppressive drugs, yes | 8 (8.8) |
| Influenza vaccinationb | 16 (17.6) |
| Pneumococcal vaccinationc | 8 (2.2) |
| CURB-65 | |
| 0–1 | 54 (59.3) |
| 2 | 24 (26.4) |
| ≥ 3 | 13 (14.3) |
| PSI | |
| Class I–II | 31 (34.1) |
| Class III | 13 (14.3) |
| Class IV/V | 47 (51.6) |
| Pre-admission antibiotic therapy | 24 (26.4) |
| Etiology of CAP | |
| Bacterial etiology | 19 (20.9) |
| Possible viral etiology | 20 (23.1) |
| Possible mixed etiology | 8 (8.8) |
| Unknown | 43 (47.3) |
PSI pneumonia severity index, SD standard deviation
aMissing data in 4.4% of patients
bMissing data in 23.1% of patients
cMissing data in 19.8% of patients