Casewise Missing Data Deletion

When casewise deletion of missing data is selected, then only cases that do not contain any missing data for any of the variables selected for the analysis will be included in the analysis. In the case of correlations, all correlations are calculated by excluding cases that have missing data for any of the selected variables (all correlations are based on the same set of data).

See also, Casewise vs. Pairwise Deletion of Missing Data.