Frequencies for first 10,000 rows of rx1v1c2 variable in namcs2010 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,216       92.16       92.16
        001 |        111        1.11       93.27
        020 |          3        0.03       93.30
        040 |        116        1.16       94.46
        057 |        148        1.48       95.94
        081 |        107        1.07       97.01
        087 |          2        0.02       97.03
        097 |         72        0.72       97.75
        105 |         36        0.36       98.11
        115 |         13        0.13       98.24
        122 |        100        1.00       99.24
        133 |         39        0.39       99.63
        218 |          5        0.05       99.68
        242 |          1        0.01       99.69
        254 |          6        0.06       99.75
        358 |         25        0.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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