Frequencies for first 10,000 rows of rx4v1c1 variable in namcs2012 dataset :

   For RX4, |
 level 1 of |
MULTUM drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,470       74.70       74.70
        001 |         97        0.97       75.67
        020 |         29        0.29       75.96
        028 |          1        0.01       75.97
        040 |        428        4.28       80.25
        057 |        515        5.15       85.40
        081 |         42        0.42       85.82
        087 |        139        1.39       87.21
        097 |        141        1.41       88.62
        105 |         54        0.54       89.16
        113 |         22        0.22       89.38
        115 |        167        1.67       91.05
        122 |        174        1.74       92.79
        133 |        156        1.56       94.35
        218 |         57        0.57       94.92
        242 |        129        1.29       96.21
        254 |         85        0.85       97.06
        331 |          1        0.01       97.07
        358 |        292        2.92       99.99
        365 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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