Frequencies for first 10,000 rows of acrdtn_type_cd variable in pos2018 dataset :

Accreditati |
    on Type |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      3,868       38.68       38.68
          0 |      4,391       43.91       82.59
          1 |      1,239       12.39       94.98
          2 |        326        3.26       98.24
          3 |        164        1.64       99.88
          4 |          1        0.01       99.89
          6 |          1        0.01       99.90
          9 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Feb 2019