| Pleural fluid DNA integrity index Median (IQR 25 - 75) | p-value |
---|---|---|
Diagnosis | Â | <0.001 |
 Malignant pleural effusion (n = 52) | 1.1 (0.8 – 1.5) |  |
 Non-malignant pleural effusion (n = 23) | 0.8 (0.7 – 0.9) |  |
Gender | Â | 0.494 |
 Female (n = 27) | 0.95 (0.77 – 1.35) |  |
 Male (n = 48) | 0.94 (0.74 – 1.26) |  |
Smoking | Â | 0.996 |
 Never (n = 25) | 0.94 (0.79 – 1.28) |  |
 Current/former smoker (n = 50) | 0.95 (0.73 – 1.37) |  |
Light’s criteria classification |  | 0.914 |
 Transudate (n = 7) | 0.91 (0.83 – 1.45) |  |
 Exudate (n = 68) | 0.96 (0.73 – 1.29) |  |
Pleural fluid cytology | Â | 0.082 |
 Negative/Equivocal | 0.90 |  |
 (n = 46) | (0.75 – 1.12) |  |
 Positive | 1.12 |  |
 (n = 29) | (0.75 – 1.56) |  |