Frequencies for first 10,000 rows of diagsc13 variable in namcs1996 dataset :

      other |
diag/screen |
 service #1 |
    - 3 dgt |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,991       99.91       99.91
        890 |          1        0.01       99.92
        891 |          3        0.03       99.95
        893 |          1        0.01       99.96
        895 |          1        0.01       99.97
        950 |          2        0.02       99.99
        999 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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