Frequencies for first 10,000 rows of drg1ing3 variable in nhamcsed1996 dataset :

 ingredient |
code #3 for |
    drug #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,871       98.71       98.71
      50637 |          2        0.02       98.73
      50720 |          1        0.01       98.74
      50745 |         11        0.11       98.85
      51130 |          1        0.01       98.86
      53175 |         25        0.25       99.11
      53895 |          1        0.01       99.12
      54050 |          3        0.03       99.15
      54395 |         19        0.19       99.34
      54465 |          6        0.06       99.40
      54480 |          1        0.01       99.41
      54595 |         12        0.12       99.53
      54960 |          1        0.01       99.54
      54990 |          4        0.04       99.58
      54995 |          4        0.04       99.62
      55105 |         10        0.10       99.72
      55130 |          1        0.01       99.73
      55240 |         26        0.26       99.99
      55280 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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