2. α diversity between esophageal biopsy and swab specimen.
| Variables | Observed OTUs | Shannon index | |||||
| Biopsy | Swab | P | Biopsy | Swab | P | ||
| The number in the column of biopsy and swab means the median of α diversity in each group. OTU, operational taxonomic unit; LGIN, low-grade intraepithelial neoplasia; HGIN, high-grade intraepithelial neoplasia; ESCC, esophageal squamous cell carcinoma. | |||||||
| Normal | 122.00 | 125.00 | 0.34 | 4.63 | 4.48 | 0.15 | |
| Esophagitis | 119.00 | 112.00 | 0.48 | 4.62 | 4.33 | 0.35 | |
| LGIN | 112.50 | 113.50 | 0.36 | 4.09 | 4.34 | 0.11 | |
| HGIN | 112.00 | 103.00 | 0.24 | 4.25 | 3.96 | 0.24 | |
| ESCC | 95.00 | 114.00 | 0.80 | 4.58 | 4.78 | 0.71 | |
| Total | 116.00 | 115.50 | 0.71 | 4.39 | 4.34 | 0.49 | |