Frequencies for first 10,000 rows of rx4v1c1 variable in namcs2013 dataset :

   For RX4, |
 level 1 of |
MULTUM drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,877       68.77       68.77
        001 |        124        1.24       70.01
        020 |         27        0.27       70.28
        028 |          3        0.03       70.31
        040 |        498        4.98       75.29
        057 |        608        6.08       81.37
        081 |         56        0.56       81.93
        087 |        183        1.83       83.76
        097 |        150        1.50       85.26
        105 |         75        0.75       86.01
        113 |         32        0.32       86.33
        115 |        247        2.47       88.80
        122 |        223        2.23       91.03
        133 |        250        2.50       93.53
        218 |         78        0.78       94.31
        242 |        123        1.23       95.54
        254 |        118        1.18       96.72
        358 |        323        3.23       99.95
        365 |          3        0.03       99.98
        899 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017