Frequencies for first 10,000 rows of rx1v1c1 variable in nhamcsed2009 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,306       23.06       23.06
        001 |      1,258       12.58       35.64
        020 |          6        0.06       35.70
        040 |        277        2.77       38.47
        057 |      3,978       39.78       78.25
        081 |         44        0.44       78.69
        087 |        312        3.12       81.81
        097 |        191        1.91       83.72
        105 |        129        1.29       85.01
        113 |         20        0.20       85.21
        115 |        381        3.81       89.02
        122 |        449        4.49       93.51
        133 |        286        2.86       96.37
        153 |          1        0.01       96.38
        218 |          3        0.03       96.41
        242 |         96        0.96       97.37
        254 |        160        1.60       98.97
        331 |         14        0.14       99.11
        358 |         48        0.48       99.59
        365 |         36        0.36       99.95
        899 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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