Frequencies for first 10,000 rows of rx7v1c2 variable in nhamcsed2008 dataset :

   for rx7, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,939       99.39       99.39
        001 |          7        0.07       99.46
        040 |         14        0.14       99.60
        057 |         17        0.17       99.77
        081 |          9        0.09       99.86
        105 |          1        0.01       99.87
        115 |          1        0.01       99.88
        122 |         11        0.11       99.99
        242 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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