Frequencies for first 10,000 rows of auth variable in namcs2000 dataset :

        was |
authorizati |
on required |
  for care? |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        869        8.69        8.69
          2 |      8,105       81.05       89.74
          3 |        856        8.56       98.30
          4 |        170        1.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016