Missing values in BESH stat
Note1: BESH stat works only with numeric data (unless it is an ID column) so the text data are treated as missing. When talking about missing data I mean text string values as well.
Note2: If you have a text categorical value in your data then create a numerical format a use numerical codes in the analysis.
BESH stat treats missing values differently based on the procedure.
- For Regression methods (eg. COX regression, Poisson, or Logistic regression) if there is a missing value for any selected variable then whole record is omitted from the analysis (ie. BESH stat performed a case-wise deletion). Procedure then creates a “Row Number” column in the output containing row position from the input dataset to see what records were actually used in the analysis.
- For analysis of independent samples (eg. Mann-Whitney test, Kruskall-Wallis test) if a value for a sample is missing then just a given value is omitted
- Finally, there are procedures that accepts missing values (eg. Skilling-Mack test) and in such case record is used even when some values are missing (unless all values for given record are missing).