Frequencies for first 10,000 rows of rx1v1c1 variable in namcs2009 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,046       20.46       20.46
        001 |      1,249       12.49       32.95
        020 |         31        0.31       33.26
        028 |          5        0.05       33.31
        040 |      1,011       10.11       43.42
        057 |      1,680       16.80       60.22
        081 |         87        0.87       61.09
        087 |        355        3.55       64.64
        097 |        420        4.20       68.84
        105 |        123        1.23       70.07
        113 |         48        0.48       70.55
        115 |        315        3.15       73.70
        122 |        606        6.06       79.76
        133 |        402        4.02       83.78
        218 |         28        0.28       84.06
        242 |        370        3.70       87.76
        254 |        521        5.21       92.97
        331 |          1        0.01       92.98
        358 |        694        6.94       99.92
        365 |          3        0.03       99.95
        899 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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