Frequencies for first 10,000 rows of rx1v3c2 variable in nhamcsed2009 dataset :

   for rx1, |
 level 3 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,292       92.92       92.92
        070 |          1        0.01       92.93
        102 |          3        0.03       92.96
        180 |         12        0.12       93.08
        186 |          1        0.01       93.09
        196 |         86        0.86       93.95
        198 |        186        1.86       95.81
        203 |         35        0.35       96.16
        210 |         19        0.19       96.35
        211 |        165        1.65       98.00
        235 |          1        0.01       98.01
        239 |         32        0.32       98.33
        268 |         10        0.10       98.43
        290 |          1        0.01       98.44
        292 |          8        0.08       98.52
        297 |          5        0.05       98.57
        301 |          8        0.08       98.65
        385 |         98        0.98       99.63
        386 |          4        0.04       99.67
        388 |         18        0.18       99.85
        389 |         10        0.10       99.95
        395 |          1        0.01       99.96
        407 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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