Frequencies for first 10,000 rows of rx1v1c2 variable in nhamcsed2007 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,684       86.84       86.84
        001 |        170        1.70       88.54
        040 |         80        0.80       89.34
        057 |        322        3.22       92.56
        081 |        146        1.46       94.02
        097 |          7        0.07       94.09
        105 |        109        1.09       95.18
        115 |          8        0.08       95.26
        122 |        397        3.97       99.23
        133 |         25        0.25       99.48
        242 |         39        0.39       99.87
        331 |          6        0.06       99.93
        358 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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