Frequencies for first 10,000 rows of approximate variable in icd9toicd10cmgem dataset :

Approximate |
Flag-comple |
 te meaning |
of ICD-9/10 |
  codes are |
        not |
 considered |
  equivalen |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,387       23.87       23.87
          1 |      7,613       76.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 May 2016