Frequencies for first 10,000 rows of rx6v1c2 variable in nhamcsed2009 dataset :

   for rx6, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,898       98.98       98.98
        001 |          9        0.09       99.07
        040 |         17        0.17       99.24
        057 |         26        0.26       99.50
        081 |         11        0.11       99.61
        087 |          1        0.01       99.62
        105 |          2        0.02       99.64
        115 |          2        0.02       99.66
        122 |         28        0.28       99.94
        133 |          3        0.03       99.97
        242 |          1        0.01       99.98
        358 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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