Table 1.
Baseline Characteristics of Participants
| Characteristics | mNGS Detection (n = 40) | Control (n = 40) | P value |
|---|---|---|---|
| Age, year (range) | 49.75 (20.00–86.00) | 55.52 (24.00–80.00) | 0.087 |
| Gender (n) | 0.576 | ||
| Male | 33 | 31 | |
| Female | 7 | 9 | |
| Smoke history (n) | 23 | 28 | 0.245 |
| Primary diseases (n) | |||
| Diabetes | 3 | 4 | 0.692 |
| Cardiovascular disease | 6 | 8 | 0.556 |
| Digestive system diseases | 4 | 4 | 1.000 |
| Renal system diseases | 2 | 2 | 1.000 |
| Cerebrovascular diseases | 3 | 4 | 0.692 |
| Respiratory diseases | 3 | 3 | 1.000 |
| Fever (n) | 22 | 20 | 0.654 |
| WBC, *109/L | 12.13 (4.20–39.75) | 9.24 (3.40–21.50) | 0.086 |
| Neutrophil, % | 78.12 (52.50–96.20) | 74.95 (54.50–93.30) | 0.180 |
| D-dimer(μg/L) | 1352.64 (145.00–3150.00) | 1423.97 (79.90–7247.00) | 0.550 |
| Hypoproteinemia (n) | 9 | 14 | 0.217 |
| Empyema (n) | 7 | 5 | 0.531 |
| Location of pleural effusion (n) | 0.239 | ||
| Unilateral | 35 | 31 | |
| Bilateral | 5 | 9 |
Notes: Statistics: Chi-square for calculations of gender, smoke history, primary diseases, fever, hypoproteinemia, empyema, readmission and location of pleural effusion, Mann–Whitney test for comparisons in age, WBC, neutrophil and D-dimer.