Frequencies for first 10,000 rows of rx9v1c1 variable in namcs2013 dataset :

   For RX9, |
 level 1 of |
MULTUM drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,003       90.03       90.03
        001 |         18        0.18       90.21
        020 |          5        0.05       90.26
        040 |        138        1.38       91.64
        057 |        203        2.03       93.67
        081 |         19        0.19       93.86
        087 |         98        0.98       94.84
        097 |         44        0.44       95.28
        105 |         13        0.13       95.41
        113 |          8        0.08       95.49
        115 |        117        1.17       96.66
        122 |         66        0.66       97.32
        133 |         48        0.48       97.80
        218 |         31        0.31       98.11
        242 |         36        0.36       98.47
        254 |         25        0.25       98.72
        358 |        126        1.26       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 , 27 Mar 2017