Frequencies for first 10,000 rows of digsc23d variable in nhamcsopd2004 dataset :

diag/screen |
    service |
write-in #2 |
  - 3 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,821       98.21       98.21
        082 |          1        0.01       98.22
        349 |          2        0.02       98.24
        389 |          1        0.01       98.25
        452 |          1        0.01       98.26
        549 |          1        0.01       98.27
        751 |          1        0.01       98.28
        753 |          9        0.09       98.37
        861 |          1        0.01       98.38
        887 |         20        0.20       98.58
        891 |         26        0.26       98.84
        892 |          3        0.03       98.87
        893 |         55        0.55       99.42
        894 |          4        0.04       99.46
        895 |         12        0.12       99.58
        904 |          1        0.01       99.59
        905 |          1        0.01       99.60
        914 |          1        0.01       99.61
        930 |          2        0.02       99.63
        932 |          1        0.01       99.64
        935 |          4        0.04       99.68
        939 |          7        0.07       99.75
        941 |          1        0.01       99.76
        950 |          5        0.05       99.81
        954 |          5        0.05       99.86
        978 |          1        0.01       99.87
        992 |          4        0.04       99.91
        995 |          5        0.05       99.96
        999 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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