Returns a sorted dataframe with First occurrances appearing in chronological order followed by all subsequent assay results. Sample results based on pooled samples are included. If an animal is lost to followup due to leaving the institution or death a record indicating that event and date is the last record in the group.

Returns a sorted dataframe with First occurrances appearing in chronological order followed by all subsequent assay results. Sample results based on pooled samples are included. If an animal is lost to followup due to leaving the institution or death a record indicating that event and date is the last record in the group.

sort_occurances(followup_df)

Arguments

followup_df	dataframe with all records.

Value

sorted followup_df as sorted_df