Table 1 Characteristics of the study population according to final diagnosis
Pneumonia (n = 61) | No pneumonia (n = 67) | p value | |
|---|---|---|---|
Mean age ± SD, y | 69.8 ± 18.8 | 71.6 ± 12.6 | 0.51 |
Women | 25 (41%) | 39 (58.2) | 0.076 |
Medical history of lung disease | |||
Chronic obstructive pulmonary disease | 7 (11.5) | 10 (14.9) | 0.611 |
Lung cancer | 2 (3.3) | 5 (7.5) | 0.444 |
Heart failure | 11 (18) | 14 (20.9) | 0.824 |
Previous pulmonary embolism | 1 (1.6) | 3 (4.5) | 0.621 |
Signs and symptoms at presentation | |||
Dyspnea | 44 (72.1) | 49 (73.1) | 1 |
Cough | 26 (42.6) | 12 (31.6) | 0.003 |
Pleuritic chest pain | 8 (13.1) | 8 (11.9) | 1 |
Shock/hypotension | 17 (27.9) | 13 (19.4) | 0.3 |
SBP ± SD, mmHg | 121.7 ± 30.5 | 124.9 ± 37.3 | 0.6 |
Heart rate >100 bpm | 42 (68.9) | 30 (44.8) | 0.008 |
Respiratory rate/min | 26.1 ± 8.2 | 23.3 ± 6.8 | 0.2 |
PaO2/FiO2 ± SD | 292.6 ± 83.9 | 309.5 ± 94 | 0.29 |
Temperature >37.8 °C | 31 (50.8) | 22 (32.8) | 0.049 |
White blood cells count/mm3 | 12,494 ± 10,130.3 | 11,906 ± 6657 | 0.7 |
Mechanical invasive ventilation | 4 (6.6) | 6 (9) | 0.747 |