Frequencies for first 10,000 rows of rehab_unit_trmntn_cd variable in pos2003 dataset :

rehabilitat |
   ion unit |
   terminat |
       code |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,816       98.16       98.16
          0 |        140        1.40       99.56
          1 |         27        0.27       99.83
          3 |          1        0.01       99.84
          4 |          1        0.01       99.85
          7 |         15        0.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017