Frequencies for first 10,000 rows of digsc22d variable in namcs2007 dataset :

 diagnostic |
 service #2 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,634       96.34       96.34
         75 |          3        0.03       96.37
         86 |          1        0.01       96.38
         87 |          2        0.02       96.40
         88 |          3        0.03       96.43
         89 |         85        0.85       97.28
         90 |         18        0.18       97.46
         91 |         11        0.11       97.57
         93 |          2        0.02       97.59
         95 |        231        2.31       99.90
         99 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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