Frequencies for first 10,000 rows of digsc22d variable in namcs2008 dataset :

 diagnostic |
 service #2 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,529       95.29       95.29
         38 |          1        0.01       95.30
         86 |          2        0.02       95.32
         87 |          3        0.03       95.35
         88 |          2        0.02       95.37
         89 |        168        1.68       97.05
         90 |         53        0.53       97.58
         91 |         12        0.12       97.70
         93 |          5        0.05       97.75
         94 |          5        0.05       97.80
         95 |        214        2.14       99.94
         99 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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