Table 2.

Microbial diversity measures and disease severity in PAH subjects

	Regression model p value
Model for mPAP (mmHg)
Alpha Diversity	0.846
Beta Diversity	0.854
F/B ratio	0.563
Model for PVR > 5 Wood units
Alpha Diversity	0.591
Beta Diversity	0.238
F/B ratio	0.667
Model for six‐minute walk distance (meters)
Alpha Diversity	0.804
Beta Diversity	0.031
F/B ratio	0.668

Note: Regression Models are adjusted for age, gender, race, and BMI.

Abbreviations: F/B, Firmicutes/Bacteriodetes ratio; mPAP, mean pulmonary arterial pressure; PVR, pulmonary vascular resistance.