Frequencies for first 10,000 rows of pgm_prtcptn_cd variable in pos2012 dataset

    Program |
Participati |
         on |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      4,942       49.42       49.42
          1 |        504        5.04       54.46
          2 |        734        7.34       61.80
          3 |      3,820       38.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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