Frequencies for first 10,000 rows of prov0010 variable in pos2001 dataset :

accreditati |
         on |
  indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,476       64.76       64.76
          0 |      2,547       25.47       90.23
          1 |        908        9.08       99.31
          2 |         67        0.67       99.98
          3 |          1        0.01       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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