The following metadata columns have been omitted because they didn't contain categorical data: DayRelativeToNearestHCT, FMTDayRelativeToNearestHCT, RandomizationDayRelativeToNearestHCT, Timepoint, TimepointOfTransplant, day-relative-to-fmt, nejmPatientId, patient-sample-counts, week-relative-to-fmt, week-relative-to-hct

The following categorical metadata columns have been omitted because the number of groups was equal to the number of samples, there was only a single group, or the column consisted only of missing data: Accession, AccessionShotgun