Frequencies for first 10,000 rows of rx7cat2 variable in namcs2006 dataset :

   for rx7, |
multum drug |
category #2 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,910       99.10       99.10
        015 |          1        0.01       99.11
        053 |          7        0.07       99.18
        109 |          1        0.01       99.19
        117 |          4        0.04       99.23
        124 |          3        0.03       99.26
        174 |          4        0.04       99.30
        192 |          1        0.01       99.31
        196 |          2        0.02       99.33
        198 |          2        0.02       99.35
        203 |         13        0.13       99.48
        209 |          1        0.01       99.49
        211 |         35        0.35       99.84
        236 |          1        0.01       99.85
        239 |          1        0.01       99.86
        268 |          2        0.02       99.88
        289 |          2        0.02       99.90
        301 |          3        0.03       99.93
        303 |          1        0.01       99.94
        320 |          4        0.04       99.98
        340 |          1        0.01       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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