Table 1 Epidemiological and clinical characteristics of study population
Characteristics | n (%) |
|---|---|
Total number of patients | 954 |
Demographic data | |
Age (years), mean ± SD | 45.2 ± 19.5 |
Gender male | 540 (56.6) |
Comorbidities | 184 (19.3) |
Coronary heart diseases | 77 (8.1) |
Diabetes | 73 (7.6) |
Chronic obstructive pulmonary disease | 22 (2.3) |
Smoking (present or past) | 254 (26.6) |
Influenza vaccine received within 1 year | 40 (4.2) |
Streptococcus pneumonia vaccine received within 1 year | 10 (1) |
Site of care | |
Outpatients | 327 (34.3) |
Inpatients | 627 (65.7) |
Ward | 621 (65.1) |
ICU | 6 (0.6) |
Antibiotics received before enrollment | 625 (65.5) |
Symptoms | |
Fever | 878 (92) |
Tmax (°C), mean ± SD | 39.0 ± 0.7 |
Cough | 875 (91.7) |
Sputum | 672 (70.4) |
Shortness of breath | 137 (14.4) |
Chest pain | 116 (12.2) |
Laboratory findings | |
Procalcitonin (n = 130), median (IQR) | 0.17 (0.42) |
C reactive protein (n = 671), median (IQR) | 42.5 (86.8) |
WBC count (×109/L), median (IQR) | 7.6 (4.7) |
WBC > 10 (×109/L) | 257 (26.9) |
WBC < 4 (×109/L) | 61 (6.4) |
Antimicrobial treatment after enrollment | |
Antibiotics | 918 (96.2) |
Antivirals | 26 (2.7) |
Length of hospital stay (days) | 9 (6–14) |
PSI, median (IQR) | 42 (36) |
Death | 4 (0.4) |