Frequencies for first 10,000 rows of digsc22d variable in namcs2003 dataset :

diag/screen |
    service |
write-in #2 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,834       98.34       98.34
         04 |          1        0.01       98.35
         20 |          1        0.01       98.36
         22 |          1        0.01       98.37
         75 |          3        0.03       98.40
         86 |          7        0.07       98.47
         88 |         20        0.20       98.67
         89 |         58        0.58       99.25
         90 |         15        0.15       99.40
         91 |          7        0.07       99.47
         93 |          8        0.08       99.55
         94 |          3        0.03       99.58
         95 |         22        0.22       99.80
         96 |          2        0.02       99.82
         99 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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