Frequencies for first 10,000 rows of digsc23d variable in namcs2006 dataset :

 diagnostic |
 service #2 |
  - 3 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,678       96.78       96.78
        194 |          1        0.01       96.79
        753 |          1        0.01       96.80
        861 |          1        0.01       96.81
        871 |          1        0.01       96.82
        890 |          1        0.01       96.83
        892 |          1        0.01       96.84
        893 |         79        0.79       97.63
        897 |         81        0.81       98.44
        903 |         27        0.27       98.71
        904 |          1        0.01       98.72
        907 |          3        0.03       98.75
        909 |         10        0.10       98.85
        913 |          3        0.03       98.88
        914 |          2        0.02       98.90
        916 |          1        0.01       98.91
        919 |          3        0.03       98.94
        930 |          1        0.01       98.95
        941 |          3        0.03       98.98
        950 |         46        0.46       99.44
        954 |          9        0.09       99.53
        992 |          4        0.04       99.57
        993 |          6        0.06       99.63
        994 |          2        0.02       99.65
        995 |          5        0.05       99.70
        999 |         30        0.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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