Frequencies for first 10,000 rows of prov0010 variable in pos1996 dataset :

accreditati |
         on |
  indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,281       72.81       72.81
          0 |      1,771       17.71       90.52
          1 |        936        9.36       99.88
          2 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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