Frequencies for first 10,000 rows of med23 variable in namcs2015 dataset :

 Medication |
        #23 |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,975       99.75       99.75
      01223 |          1        0.01       99.76
      03229 |          1        0.01       99.77
      05024 |          1        0.01       99.78
      07366 |          2        0.02       99.80
      08006 |          1        0.01       99.81
      08179 |          1        0.01       99.82
      09624 |          1        0.01       99.83
      11143 |          1        0.01       99.84
      12157 |          1        0.01       99.85
      19865 |          1        0.01       99.86
      23755 |          1        0.01       99.87
      34110 |          1        0.01       99.88
      34520 |          1        0.01       99.89
      34575 |          1        0.01       99.90
      34623 |          1        0.01       99.91
      34725 |          1        0.01       99.92
      35240 |          1        0.01       99.93
      91096 |          1        0.01       99.94
      92105 |          1        0.01       99.95
      92141 |          1        0.01       99.96
      92164 |          1        0.01       99.97
      93193 |          1        0.01       99.98
      97073 |          1        0.01       99.99
      99207 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017