Frequencies for first 10,000 rows of drg1ing4 variable in nhamcsopd1998 dataset :

 ingredient |
code #4 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,836       98.36       98.36
      54468 |          4        0.04       98.40
      54595 |          2        0.02       98.42
      54713 |          3        0.03       98.45
      55180 |          1        0.01       98.46
      55218 |          1        0.01       98.47
      55440 |          1        0.01       98.48
      55645 |          3        0.03       98.51
      55710 |          7        0.07       98.58
      55745 |          1        0.01       98.59
      55755 |        131        1.31       99.90
      56194 |          5        0.05       99.95
      56265 |          3        0.03       99.98
      57168 |          1        0.01       99.99
      57170 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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