In addition, we performed the sensitivity analysis using CLR-transformed non-rarefied data and Aitchison distance; the pattern of significance differed from the primary analysis: beta-diversity in the antrum site showed significant separation across GERD phenotypes (PERMANOVA, R 2 = 0.081, F = 1.42, p = 0.008), whereas beta-diversity in the duodenum site did not reach statistical significance (PERMANOVA, R 2 = 0.084, F = 1.24, p = 0.082).
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A Cross-Sectional Dual-Site Analysis of the Gastric Antral and Duodenal Mucosa-Associated Microbiome Across Gastroesophageal Reflux Disease Phenotypes
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