Table 2.

Associations between upper digestive tract microbial richness or β-diversity metrics and PGI/II ratio in the CSS2

Adjusted modelaModel further adjusted for ESDbInteraction ESD*PGI/IIb
CoefficientPCoefficientPP
Microbial richness
 Number of genera0.029 ± 0.0130.0340.025 ± 0.0130.0590.029
β-diversity
 PC1−0.038 ± 0.0130.004−0.035 ± 0.0130.0090.081
 PC20.013 ± 0.0140.3460.015 ± 0.0140.2870.904
 PC30.034 ± 0.0130.0090.034 ± 0.0130.0110.833

NOTE: Bold indicates P value less than 0.05.

  • aLinear regression model adjusted for smoking, gender, age, balloon sampling device, and antibiotic usage in the last 3 months.

  • bLinear regression model further adjusted for ESD besides smoking, gender, age, balloon sampling device, and antibiotic usage in the last 3 months.