Frequencies for first 10,000 rows of pgm_prtcptn_cd variable in pos2017 dataset

    Program |
Participati |
    on Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      5,074       50.74       50.74
          1 |        486        4.86       55.60
          2 |        745        7.45       63.05
          3 |      3,695       36.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Jan 2018