Frequencies for first 10,000 rows of prov0010 variable in pos1993 dataset :

accreditati |
         on |
  indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,504       85.04       85.04
          0 |        304        3.04       88.08
          1 |      1,183       11.83       99.91
          2 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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