Frequencies for first 10,000 rows of digsc22d variable in namcs2005 dataset :

 diagnostic |
 service #2 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,758       97.58       97.58
         89 |        152        1.52       99.10
         90 |         22        0.22       99.32
         91 |          4        0.04       99.36
         93 |          3        0.03       99.39
         94 |          2        0.02       99.41
         95 |         41        0.41       99.82
         99 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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