Frequencies for first 10,000 rows of med variable in namcs1996 dataset :

       were |
medications |
/injections |
ordered/pro |
         v? |      Freq.     Percent        Cum.
------------+-----------------------------------
        Yes |      9,980       99.80       99.80
         No |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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