Calculate and categorize WHO-Scale
     
    
    build_who_scale_suep_df(trial_data, pid, docid, visitid)
 
     
    
    Arguments
- trial_data
 
A secuTrial data object
 
- pid
 
column name of patient ID in trial_data
 
- docid
 
column name of document ID in trial_data
 
- visitid
 
column name of visit ID in trial_data
 
 
    
    Value
    dataframe, which contains the who-scale per visit