Frequencies for first 10,000 rows of drg1ing5 variable in nhamcsopd1995 dataset :

 ingredient |
code #5 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,803       98.03       98.03
      55180 |          1        0.01       98.04
      55348 |          4        0.04       98.08
      55755 |         14        0.14       98.22
      56185 |        174        1.74       99.96
      56193 |          3        0.03       99.99
      56210 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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