Frequencies for first 10,000 rows of rx4v2c2 variable in namcs2007 dataset :

   for rx4, |
 level 2 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,713       97.13       97.13
        005 |          4        0.04       97.17
        012 |          2        0.02       97.19
        015 |          5        0.05       97.24
        019 |         12        0.12       97.36
        053 |          8        0.08       97.44
        064 |         22        0.22       97.66
        065 |         27        0.27       97.93
        066 |          1        0.01       97.94
        083 |         92        0.92       98.86
        098 |         18        0.18       99.04
        100 |          5        0.05       99.09
        101 |          6        0.06       99.15
        109 |          5        0.05       99.20
        110 |          1        0.01       99.21
        117 |         10        0.10       99.31
        123 |         10        0.10       99.41
        124 |          4        0.04       99.45
        125 |          1        0.01       99.46
        136 |          3        0.03       99.49
        151 |          2        0.02       99.51
        192 |          4        0.04       99.55
        249 |          1        0.01       99.56
        251 |          1        0.01       99.57
        253 |          2        0.02       99.59
        277 |          1        0.01       99.60
        289 |          2        0.02       99.62
        303 |          4        0.04       99.66
        320 |         26        0.26       99.92
        340 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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