Frequencies for first 10,000 rows of rx7v1c1 variable in nhamcsed2008 dataset :

   for rx7, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,741       97.41       97.41
        001 |         29        0.29       97.70
        040 |         31        0.31       98.01
        057 |         85        0.85       98.86
        081 |          2        0.02       98.88
        087 |         30        0.30       99.18
        097 |          9        0.09       99.27
        105 |          7        0.07       99.34
        115 |         17        0.17       99.51
        122 |         13        0.13       99.64
        133 |          6        0.06       99.70
        153 |          1        0.01       99.71
        242 |         13        0.13       99.84
        254 |          1        0.01       99.85
        331 |          2        0.02       99.87
        358 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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