Frequencies for first 10,000 rows of digsc22d variable in nhamcsopd2001 dataset :

diag/screen |
    service |
write-in #2 |
 - 2 digit/ |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,823       98.23       98.23
         75 |          3        0.03       98.26
         86 |          4        0.04       98.30
         88 |          6        0.06       98.36
         89 |        105        1.05       99.41
         90 |          8        0.08       99.49
         91 |          5        0.05       99.54
         93 |         14        0.14       99.68
         94 |          1        0.01       99.69
         95 |         14        0.14       99.83
         96 |          3        0.03       99.86
         99 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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