Frequencies for record_7 variable in linkco1995us_unl dataset :

Record-Axis |
  Condition |
Code 7 (ICD |
       10th |
  Revision) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        705       99.58       99.58
       7651 |          1        0.14       99.72
       7704 |          1        0.14       99.86
       7798 |          1        0.14      100.00
------------+-----------------------------------
      Total |        708      100.00

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