Frequencies for first 10,000 rows of rx7v2c2 variable in nhamcsopd2009 dataset :

   for rx7, |
 level 2 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,838       98.38       98.38
        005 |          1        0.01       98.39
        012 |          3        0.03       98.42
        015 |          6        0.06       98.48
        019 |          3        0.03       98.51
        046 |         20        0.20       98.71
        053 |          5        0.05       98.76
        064 |          7        0.07       98.83
        065 |         14        0.14       98.97
        066 |          1        0.01       98.98
        083 |         42        0.42       99.40
        098 |          4        0.04       99.44
        101 |          2        0.02       99.46
        106 |          1        0.01       99.47
        110 |          1        0.01       99.48
        117 |          2        0.02       99.50
        123 |          7        0.07       99.57
        124 |          6        0.06       99.63
        125 |          1        0.01       99.64
        129 |          2        0.02       99.66
        136 |          1        0.01       99.67
        146 |          2        0.02       99.69
        151 |          2        0.02       99.71
        192 |          1        0.01       99.72
        251 |          6        0.06       99.78
        257 |          2        0.02       99.80
        277 |          1        0.01       99.81
        289 |          4        0.04       99.85
        303 |          5        0.05       99.90
        320 |          5        0.05       99.95
        340 |          2        0.02       99.97
        401 |          1        0.01       99.98
        417 |          1        0.01       99.99
        423 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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