Frequencies for first 10,000 rows of drg1ing4 variable in nhamcsopd1994 dataset :

 ingredient |
code #4 for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,762       97.62       97.62
      51340 |          1        0.01       97.63
      54330 |          1        0.01       97.64
      54350 |          1        0.01       97.65
      54465 |          1        0.01       97.66
      54468 |          1        0.01       97.67
      54595 |          2        0.02       97.69
      54655 |          1        0.01       97.70
      54713 |          2        0.02       97.72
      55105 |         11        0.11       97.83
      55180 |          1        0.01       97.84
      55645 |          2        0.02       97.86
      55710 |         13        0.13       97.99
      55755 |        179        1.79       99.78
      55770 |          2        0.02       99.80
      56193 |         14        0.14       99.94
      56194 |          1        0.01       99.95
      56265 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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