Frequencies for first 10,000 rows of prov0010 variable in pos2000 dataset :

accreditati |
         on |
  indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,699       66.99       66.99
          0 |      2,376       23.76       90.75
          1 |        873        8.73       99.48
          2 |         50        0.50       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017