Frequencies for first 10,000 rows of rx2v1c2 variable in nhamcsed2011 dataset :

   For RX2, |
 level 1 of |
MULTUM drug |
category #2 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,101       91.01       91.01
        001 |        108        1.08       92.09
        040 |        131        1.31       93.40
        057 |        216        2.16       95.56
        081 |         57        0.57       96.13
        097 |          4        0.04       96.17
        105 |         11        0.11       96.28
        113 |          4        0.04       96.32
        115 |         14        0.14       96.46
        122 |        312        3.12       99.58
        133 |         19        0.19       99.77
        242 |         18        0.18       99.95
        358 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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