Frequencies for first 10,000 rows of digsc22d variable in namcs2006 dataset :

 diagnostic |
 service #2 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,678       96.78       96.78
         19 |          1        0.01       96.79
         75 |          1        0.01       96.80
         86 |          1        0.01       96.81
         87 |          1        0.01       96.82
         89 |        162        1.62       98.44
         90 |         41        0.41       98.85
         91 |          9        0.09       98.94
         93 |          1        0.01       98.95
         94 |          3        0.03       98.98
         95 |         55        0.55       99.53
         99 |         47        0.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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