Table 2. Laboratory and microbiological characteristics in 259 patients hospitalized for CAP, stratified according to long-term mortality.
| Variable | Total (n = 259) | Alivea (n = 180) | Dead (n = 79) | Pb |
|---|---|---|---|---|
| Laboratory and radiographic findings | ||||
| Bilateral infiltrate, n (%) | 62 (23.9) | 40 (22.2) | 22 (27.8) | .33 |
| Leucocyte count (×109/L) | 12.4 (9.3–16.6) | 12.2 (9.2–17.0) | 12.9 (9.8–16.0) | .52 |
| CRP (mg/L) | 219 (104) | 225 (104) | 207 (103) | .29 |
| Creatinine (μmol/L) | 77 (63–97) | 75 (62–92) | 90 (66–107) | .05 |
| Albumin (g/L) | 28 (5) | 28 (5) | 27 (5) | .06 |
| Etiology of CAP, n (%)c | ||||
| By category of agents | ||||
| Pure bacteriald | 75 (29.0) | 50 (27.8) | 25 (31.6) | .58 |
| Pure viral | 38 (14.7) | 26 (14.4) | 12 (15.2) | .74 |
| Viral–bacterial | 49 (18.9) | 37 (20.6) | 12 (15.2) | .17 |
| Unknown | 97 (37.5) | 67 (37.2) | 30 (38.0) | .67 |
| Streptococcus pneumoniae | 80 (30.9) | 59 (32.8) | 21 (26.6) | .30 |
| Influenza viruses | 39 (15.1) | 27 (15.0) | 12 (15.4) | .63 |
| Bacteraemia | 24 (9.3) | 19 (10.6) | 5 (6.3) | .41 |
Note: Data are presented as No. (%), and mean (SD) or median (25th–75th percentile) depending on distribution. Abbreviations: CAP, community-acquired pneumonia; CRP, C-reactive protein.
a One case was lost to follow-up (censored) at day 1.
b Comparison between patients who were alive or dead at the end of follow-up.
c Inclusion of duration of symptoms (in Table 1) did not change any of the results appreciably.
d Reference group.