Frequencies for first 10,000 rows of rx4v1c2 variable in nhamcsed2010 dataset :

   For RX4, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,603       96.03       96.03
        001 |         49        0.49       96.52
        040 |         68        0.68       97.20
        057 |        106        1.06       98.26
        081 |         17        0.17       98.43
        105 |          1        0.01       98.44
        115 |          9        0.09       98.53
        122 |        129        1.29       99.82
        133 |          6        0.06       99.88
        242 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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