Frequencies for first 10,000 rows of rx4v1c1 variable in namcs2011 dataset :

   For RX4, |
 level 1 of |
MULTUM drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,963       69.63       69.63
        001 |        126        1.26       70.89
        020 |         15        0.15       71.04
        028 |          1        0.01       71.05
        040 |        481        4.81       75.86
        057 |        568        5.68       81.54
        081 |         48        0.48       82.02
        087 |        164        1.64       83.66
        097 |        154        1.54       85.20
        105 |         42        0.42       85.62
        113 |         23        0.23       85.85
        115 |        195        1.95       87.80
        122 |        244        2.44       90.24
        133 |        144        1.44       91.68
        218 |         58        0.58       92.26
        242 |        163        1.63       93.89
        254 |        218        2.18       96.07
        358 |        390        3.90       99.97
        365 |          1        0.01       99.98
        899 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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