Frequencies for first 10,000 rows of rx8v1c1 variable in namcs2009 dataset :

   for rx8, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,096       90.96       90.96
        001 |         35        0.35       91.31
        020 |          8        0.08       91.39
        028 |          4        0.04       91.43
        040 |        135        1.35       92.78
        057 |        182        1.82       94.60
        081 |         17        0.17       94.77
        087 |         75        0.75       95.52
        097 |         41        0.41       95.93
        105 |         15        0.15       96.08
        113 |         13        0.13       96.21
        115 |         85        0.85       97.06
        122 |         76        0.76       97.82
        133 |         35        0.35       98.17
        218 |         19        0.19       98.36
        242 |         54        0.54       98.90
        254 |          5        0.05       98.95
        358 |        105        1.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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