Frequencies for first 10,000 rows of record_8 variable in linkco1991us_num dataset :

Record-Axis |
  Condition |
Code 8 (ICD |
        9th |
  Revision) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,980       99.80       99.80
       7580 |          1        0.01       99.81
        769 |          1        0.01       99.82
       7703 |          1        0.01       99.83
       7708 |          2        0.02       99.85
       7721 |          3        0.03       99.88
       7775 |          1        0.01       99.89
       7798 |          3        0.03       99.92
       7803 |          1        0.01       99.93
       7855 |          1        0.01       99.94
       7903 |          1        0.01       99.95
       7991 |          2        0.02       99.97
       9679 |          1        0.01       99.98
       9973 |          1        0.01       99.99
       9982 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015