Frequencies for first 10,000 rows of choice_list variable in icd9toicd10pcsgem dataset :

Choice List |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,470       94.70       94.70
          1 |        307        3.07       97.77
          2 |        189        1.89       99.66
          3 |         25        0.25       99.91
          4 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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