When I import that data NONE of the variables have ANY missing values.  Some of them do have the value 66. Are you saying that PROC IMPORT has converted the 99's to 66's? ---------------------------------------------------------------------------- | FORMAT NAME: PROF_HA LENGTH: 14 NUMBER OF VALUES: 4 | | MIN LENGTH: 1 MAX LENGTH: 14 DEFAULT LENGTH: 14 FUZZ: 0 | |--------------------------------------------------------------------------| |START |END |LABEL (VER. V7|V8 03SEP2021:08:48:41)| |----------------+----------------+----------------------------------------| | 0| 0|No | | 1| 1|Yes | | 66| 66|Not applicable | | 99| 99|No answer | ---------------------------------------------------------------------------- Cumulative Cumulative prof_h Frequency Percent Frequency Percent ------------------------------------------------------------------- No 1 33.33 1 33.33 Not applicable 2 66.67 3 100.00 Cumulative Cumulative prof_h Frequency Percent Frequency Percent ----------------------------------------------------------- 0 1 33.33 1 33.33 66 2 66.67 3 100.00 ... View more