Frequencies for first 10,000 rows of digsc22d variable in namcs2002 dataset :

Diag/Screen |
    service |
write-in #2 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,878       98.78       98.78
         37 |          1        0.01       98.79
         38 |          1        0.01       98.80
         45 |          1        0.01       98.81
         57 |          1        0.01       98.82
         75 |          2        0.02       98.84
         86 |          4        0.04       98.88
         87 |          2        0.02       98.90
         88 |         26        0.26       99.16
         89 |         29        0.29       99.45
         90 |         10        0.10       99.55
         91 |          8        0.08       99.63
         92 |          4        0.04       99.67
         93 |          8        0.08       99.75
         95 |         16        0.16       99.91
         99 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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