Frequencies for first 10,000 rows of drg1ing4 variable in nhamcsopd2000 dataset :

 ingredient |
code #4 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,937       99.37       99.37
      53325 |          1        0.01       99.38
      53640 |          1        0.01       99.39
      54238 |          1        0.01       99.40
      54713 |          3        0.03       99.43
      55105 |          1        0.01       99.44
      55180 |          1        0.01       99.45
      55440 |          2        0.02       99.47
      55755 |         43        0.43       99.90
      55770 |          1        0.01       99.91
      56161 |          1        0.01       99.92
      56185 |          1        0.01       99.93
      56193 |          2        0.02       99.95
      56265 |          2        0.02       99.97
      70032 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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