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Fig. 2 | Respiratory Research

Fig. 2

From: Sputum sample positivity for Haemophilus influenzae or Moraxella catarrhalis in acute exacerbations of chronic obstructive pulmonary disease: evaluation of association with positivity at earlier stable disease timepoints

Fig. 2

Positivity of first or second exacerbation by bacterial presence or absence at reference timepoint. Shown as percentage (95% CI) of samples that were positive for Haemophilus influenzae or Moraxella catarrhalis at first or second exacerbation given pathogen’s presence or absence at a the screening visit, b any stable visit within 90 days before the first exacerbation, or c any stable visit within 90 days before the second exacerbation (Full cohort, Year 1 and Year 2). 95% CI, 95% confidence interval; Culture +/− , H. influenzae- or M. catarrhalis-positive/negative by culture-based assay; PCR +/−, H. influenzae- or M. catarrhalis-positive/negative by PCR assay; p-value, p-value for difference between percentages, calculated by equality test between two independent proportions. Numbers in square brackets indicate the number of sputum samples positive at exacerbation/number positive or negative at reference timepoint

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Respiratory Research

ISSN: 1465-993X

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