Frequencies for first 10,000 rows of drugcl5 variable in nhamcsopd1992 dataset :

 Drug class |
        for |
 medication |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,551       95.51       95.51
         01 |          4        0.04       95.55
         03 |         27        0.27       95.82
         04 |         16        0.16       95.98
         05 |        117        1.17       97.15
         06 |         25        0.25       97.40
         07 |          3        0.03       97.43
         08 |         23        0.23       97.66
         09 |         33        0.33       97.99
         10 |         45        0.45       98.44
         11 |          7        0.07       98.51
         12 |         11        0.11       98.62
         13 |         12        0.12       98.74
         14 |          4        0.04       98.78
         15 |         20        0.20       98.98
         16 |          2        0.02       99.00
         17 |         50        0.50       99.50
         19 |         28        0.28       99.78
         20 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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