Frequencies for first 10,000 rows of diagsc23 variable in nhamcsed1997 dataset :

      other |
diag/screen |
 service #2 |
    - 3 dgt |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,960       99.60       99.60
        681 |          1        0.01       99.61
        893 |          4        0.04       99.65
        896 |          3        0.03       99.68
        900 |          2        0.02       99.70
        903 |          2        0.02       99.72
        904 |          6        0.06       99.78
        908 |          1        0.01       99.79
        909 |          4        0.04       99.83
        913 |          4        0.04       99.87
        914 |          4        0.04       99.91
        919 |          4        0.04       99.95
        941 |          3        0.03       99.98
        999 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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