Frequencies for first 10,000 rows of rehab_unit_trmntn_cd variable in pos1994 dataset :

rehabilitat |
   ion unit |
   terminat |
       code |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,860       98.60       98.60
          0 |        123        1.23       99.83
          1 |          7        0.07       99.90
          4 |          1        0.01       99.91
          7 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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