Table 2 Elderly patient characteristics by in-hospital mortality status
Characteristics | Alive (n = 313) | Dead (n = 200) | p-value |
|---|---|---|---|
Age (years) | 78.3 ± 7.8 | 80.3 ± 8.8 | 0.008 |
Sex (male) | 175 (55.9) | 106 (53) | 0.526 |
Underlying condition | |||
Charlson comorbidity index | 6.2 ± 2.5 | 6.8 ± 2.5 | 0.01 |
Do-not-resuscitate status | 137 (43.8) | 181 (90.5) | < 0.001 |
Vital signs and mental status | |||
Body temperature (°C) | 37, 1.2 | 36.8, 0.9 | 0.002 |
Mean arterial pressure (mmHg) | 97.4 ± 22.1 | 90.9 ± 25 | 0.002 |
Pulse rate (beats/min) | 99.3 ± 24 | 102.7 ± 25.3 | 0.122 |
Respiratory rate (breaths/min) | 31.9 ± 8 | 33.2 ± 8.5 | 0.085 |
Glasgow coma scale score | 15, 4 | 12, 6 | < 0.001 |
Room air oxygen saturation | 93, 9.8 | 88, 13.8 | < 0.001 |
Laboratory results | |||
Hemoglobin (g/dL)* | 10.6 ± 2.5 | 9.9 ± 2.4 | 0.001 |
White blood cells (×1000/µL)** | 11.1, 8.1 | 12, 8.4 | 0.348 |
Platelet (×10,000/µL)* | 25.3 ± 13.7 | 25.1 ± 13.7 | 0.901 |
Glomerular filtration rate (ml/min/1.73m2)*** | 64.4 ± 32.5 | 59.8 ± 33.9 | 0.124 |
Type of pneumonia | 0.063 | ||
Community-acquired pneumonia | 200 (63.9) | 107 (53.5) | |
Hospital-acquired pneumonia | 111 (35.5) | 91 (45.5) | |
Ventilator-associated pneumonia | 2 (0.6) | 2 (1) | |
Severity of Pneumonia (CURB-65)**** | 0.427 | ||
CURB-65 score 0–1 | 19 (6.1) | 8 (4.0) | |
CURB-65 score 2–3 | 199 (64.2) | 124 (62.3) | |
CURB-65 score 4–5 | 92 (29.7) | 67 (33.7) | |
Initial oxygen support | 0.005 | ||
None | 38 (12.1) | 21 (10.5) | |
Cannula | 126 (40.3) | 63 (31.5) | |
Mask with bag | 92 (29.4) | 89 (44.5) | |
Endotracheal tube | 27 (8.6) | 18 (9) | |
Outcome | |||
Emergency department length of stay (hours) | 13, 19.5 | 19, 31.8 | < 0.001 |
Hospital length of stay (days) | 7, 13 | 3.5, 6.8 | 0.001 |