Frequencies for first 10,000 rows of digsc23d variable in namcs2008 dataset :

 diagnostic |
 service #2 |
  - 3 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,529       95.29       95.29
        389 |          1        0.01       95.30
        861 |          2        0.02       95.32
        872 |          1        0.01       95.33
        877 |          2        0.02       95.35
        887 |          1        0.01       95.36
        889 |          1        0.01       95.37
        891 |         11        0.11       95.48
        892 |         11        0.11       95.59
        893 |         77        0.77       96.36
        894 |          3        0.03       96.39
        895 |         31        0.31       96.70
        897 |         35        0.35       97.05
        903 |         45        0.45       97.50
        904 |          1        0.01       97.51
        909 |          7        0.07       97.58
        913 |          6        0.06       97.64
        914 |          1        0.01       97.65
        919 |          5        0.05       97.70
        930 |          3        0.03       97.73
        939 |          2        0.02       97.75
        940 |          4        0.04       97.79
        941 |          1        0.01       97.80
        950 |        179        1.79       99.59
        954 |         35        0.35       99.94
        995 |          1        0.01       99.95
        999 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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