Frequencies for first 10,000 rows of prov0010 variable in pos1998 dataset :

accreditati |
         on |
  indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,815       68.15       68.15
          0 |      2,235       22.35       90.50
          1 |        923        9.23       99.73
          2 |         26        0.26       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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