Table 1. Characteristics of patients with pneumococcal pneumonia.
| Characteristic | Age < 65 years | Age ≥ 65 years | P value |
|---|---|---|---|
| (n = 127) | (n = 59) | ||
| Male, n (%) | 78 (62.4) | 40 (67.8) | 0.40 |
| Age (in years), mean (SD) | 46 (36–55) | 70 (67–72) | 0.001 |
| Average income, n (%) | |||
| Dependent | 38 (30) | 17 (29) | 0.30 |
| Low | 80 (63) | 42 (71) | |
| Average | 9 (7) | 0 (0) | |
| High | 0 (0) | 0 (0) | |
| Pneumonia, n (%) | |||
| Pneumococcal pneumonia | 102 (80) | 48 (81) | 0.86 |
| Bacteremic pneumococcal pneumonia | 25 (20) | 11 (19) | |
| Comorbidities, n (%) | |||
| Chronic heart disease | 36 (28.3) | 31 (52.5) | < 0.01 |
| Chronic respiratory disease | 47 (37.0) | 35 (59.3) | < 0.01 |
| Chronic liver disease | 11 (8.6) | 0 (0) | < 0.01 |
| Chronic renal disease | 11 (8.6) | 3 (5.0) | < 0.01 |
| HIV | 29 (22.8) | 0 (0) | < 0.01 |
| Chronic neurological disease | 8 (6.3) | 5 (8.5) | 0.60 |
| Immunosuppression | 19 (14.9) | 17 (28.8) | 0.02 |
| Diabetes mellitus | 6 (4.7) | 4 (6.7) | 0.50 |
| Smoking | 46 (36.2) | 24 (40.6) | 0.60 |
| Alcohol abuse | 25 (19.7) | 10 (16.9) | 0.60 |
| ICU admission, n (%) | 33 (25.6) | 17 (28.8) | 0.10 |
| Mean length of stay (days) | |||
| Total | 10 (7–15) | 14 (5–22) | 0.46 |
| ICU | 3 (0–5) | 2 (0–3) | 0.40 |
| Death, n (%) | 23 (18.1) | 14 (23.7) | 0.34 |
SD: standard deviation, HIV: human immunodeficiency virus, ICU: intensive care unit.