Frequencies for first 10,000 rows of ACRDTN_TYPE_CD variable in pos2011 dataset :

Accreditati |
    on Type |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,326       63.26       63.26
          0 |      2,284       22.84       86.10
          1 |      1,118       11.18       97.28
          2 |        221        2.21       99.49
          3 |         49        0.49       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2019