Frequencies for first 10,000 rows of drugcl3 variable in nhamcsopd1992 dataset :

 Drug class |
        for |
 medication |
         #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,564       85.64       85.64
         01 |          8        0.08       85.72
         02 |          7        0.07       85.79
         03 |         84        0.84       86.63
         04 |         25        0.25       86.88
         05 |        285        2.85       89.73
         06 |         86        0.86       90.59
         07 |         14        0.14       90.73
         08 |         68        0.68       91.41
         09 |         79        0.79       92.20
         10 |        109        1.09       93.29
         11 |        136        1.36       94.65
         12 |         46        0.46       95.11
         13 |         34        0.34       95.45
         14 |         30        0.30       95.75
         15 |         44        0.44       96.19
         16 |          6        0.06       96.25
         17 |        160        1.60       97.85
         18 |          3        0.03       97.88
         19 |        115        1.15       99.03
         20 |         97        0.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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