Fig. 3From: Comparison of endotracheal aspirate and bronchoalveolar lavage fluid metagenomic next-generation sequencing in severe pneumonia: a nested, matched case–control studyMixed-infection in the ETA group and BALF group. A Constitutional ratios of mixed-infection in 53 patients undergoing ETA mNGS (inner circle) and 106 patients undergoing BALF mNGS (outer circle). B Mixed-infection in the ETA group. The square symbols represent odds ratio, and the horizontal lines represent the 95% confidence interval. Abbreviations: ETA, endotracheal aspirates; BALF, bronchoalveolar lavage fluidBack to article page