Frequencies for first 10,000 rows of rx7v1c1 variable in namcs2011 dataset :

   For RX7, |
 level 1 of |
MULTUM drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,681       86.81       86.81
        001 |         31        0.31       87.12
        020 |          7        0.07       87.19
        028 |          2        0.02       87.21
        040 |        217        2.17       89.38
        057 |        265        2.65       92.03
        081 |         29        0.29       92.32
        087 |         92        0.92       93.24
        097 |         55        0.55       93.79
        105 |         25        0.25       94.04
        113 |         19        0.19       94.23
        115 |        117        1.17       95.40
        122 |        100        1.00       96.40
        133 |         48        0.48       96.88
        218 |         40        0.40       97.28
        242 |         64        0.64       97.92
        254 |         42        0.42       98.34
        331 |          1        0.01       98.35
        358 |        163        1.63       99.98
        365 |          1        0.01       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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