Frequencies for first 10,000 rows of prov2885 variable in posclia2008 dataset :

    type of |
    control |      Freq.     Percent        Cum.
------------+-----------------------------------
         01 |        221        2.21        2.21
         02 |        991        9.91       12.12
         03 |        354        3.54       15.66
         04 |      7,505       75.05       90.71
         05 |        101        1.01       91.72
         06 |        255        2.55       94.27
         07 |        213        2.13       96.40
         08 |        141        1.41       97.81
         09 |        102        1.02       98.83
         10 |        117        1.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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