Frequencies for first 10,000 rows of rx4v3c2 variable in nhamcsed2007 dataset :

   for rx4, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,862       98.62       98.62
        174 |          1        0.01       98.63
        180 |          3        0.03       98.66
        185 |          1        0.01       98.67
        196 |         41        0.41       99.08
        198 |         40        0.40       99.48
        201 |          1        0.01       99.49
        203 |         12        0.12       99.61
        209 |          1        0.01       99.62
        210 |          8        0.08       99.70
        211 |         15        0.15       99.85
        239 |          7        0.07       99.92
        268 |          5        0.05       99.97
        301 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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