Frequencies for first 10,000 rows of drg1ing5 variable in nhamcsopd2000 dataset :

 ingredient |
code #5 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,945       99.45       99.45
      55253 |          1        0.01       99.46
      55348 |          3        0.03       99.49
      55520 |          2        0.02       99.51
      55755 |          1        0.01       99.52
      56185 |         44        0.44       99.96
      56195 |          2        0.02       99.98
      56265 |          1        0.01       99.99
      70042 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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