Frequencies for first 10,000 rows of drg3ing3 variable in nhamcsed1999 dataset :

 ingredient |
code #3 for |
    drug #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,961       99.61       99.61
      50637 |          2        0.02       99.63
      50745 |          2        0.02       99.65
      52023 |          1        0.01       99.66
      53175 |          4        0.04       99.70
      53895 |          1        0.01       99.71
      54395 |         10        0.10       99.81
      54465 |          4        0.04       99.85
      54595 |          3        0.03       99.88
      54995 |          1        0.01       99.89
      55108 |          1        0.01       99.90
      55240 |          6        0.06       99.96
      55745 |          1        0.01       99.97
      55755 |          1        0.01       99.98
      59803 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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