Table 2.
Microbiome Characteristics by Dichotomous Antibiotic Exposure in the Prior 7 Days
| Variable | Unexposeda | Exposeda | P Value |
|---|---|---|---|
| Alpha diversitya | |||
| Levofloxacin | 3.32 (2.35 to 4.02) | 3.83 (3.32 to 4.36) | .03 |
| BSBL | 3.73 (3.14 to 4.31) | 3.28 (1.73 to 3.71) | .01 |
| Bacteroidetes proportional abundance | |||
| Levofloxacin | 0.54 (0.01 to 0.76) | 0.64 (0.31 to 0.79) | .19 |
| BSBL | 0.58 (0.03 to 0.74) | 0.59 (0.01 to 0.76) | .59 |
| Dominance by non-Bacteroidetes genus, No. (%) | |||
| Levofloxacin | 15 (38) | 3 (14) | .051 |
| BSBL | 10 (26) | 8 (38) | .32 |
Unless noted otherwise, data are presented as median (interquartile range).
Abbreviation: BSBL, broad-spectrum beta-lactam.
aShannon’s alpha diversity.