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Table 8 Correlation analysis of bacterial burden in PSB samples and pulmonary function

From: Quantitative analysis of pathogens in the lower respiratory tract of patients with chronic obstructive pulmonary disease

  Staphylococcus aureus Klebsiella pneumoniae Streptococcus pneumoniae Pseudomonos aeruginosa Haemophilus influenzeae Moraxella catarrhalis
(log CFU/ml) (log CFU/ml) (log CFU/ml) (log CFU/ml) (log CFU/ml) (log CFU/ml)
r p r p r p r p r p r p
FEV1 % predicted −0.674 <0.01 −0.865 <0.01 −0.543 <0.01 −0.664 <0.01 −0.849 <0.01 −0.813 <0.01
FVC % predicted −0.597 <0.01 −0.756 <0.01 −0.419 <0.01 −0.586 <0.01 −0.728 <0.01 −0.675 <0.01
FEV1/FVC −0.660 <0.01 −0.833 <0.01 −0.532 <0.01 −0.639 <0.01 −0.814 <0.01 −0.776 <0.01