Frequencies for first 10,000 rows of rx4v1c2 variable in nhamcsed2012 dataset :

   For RX4, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,701       97.01       97.01
        001 |         19        0.19       97.20
        020 |          1        0.01       97.21
        040 |         39        0.39       97.60
        057 |         61        0.61       98.21
        081 |         24        0.24       98.45
        087 |          1        0.01       98.46
        105 |          5        0.05       98.51
        113 |          2        0.02       98.53
        115 |          9        0.09       98.62
        122 |        130        1.30       99.92
        133 |          5        0.05       99.97
        242 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016