Frequencies for first 10,000 rows of intertype variable in pos1988 dataset :

Inter. Type |
       PG - |
    Program |
  Generated |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      5,096       50.96       50.96
          0 |        378        3.78       54.74
          1 |      3,298       32.98       87.72
          3 |        257        2.57       90.29
          5 |        971        9.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016