Table 3—

Linear regression analysis to predict sputum lactate dehydrogenase (LDH)

Log LDH IU·mL−1CoefficientStandard errorP>t
Log neutrophils×106·mL−10.420.1p=0.001
Log eosinophils×106·mL−1−0.180.09p=0.06
Log ECP ng·mL−10.210.15p=0.2
Log neutrophil elastase0.020.08p=0.5
Log IL-8 ng·mL−10.330.18p=0.09
Constant2.21.1p=0.059
  • IU: international units

  • ECP: eosinophil cationic protein

  • IL: interleukin. Probability F>0.0001, adjusted R2=0.787