Frequencies for first 10,000 rows of rx4v1c2 variable in namcs2013 dataset :

   For RX4, |
 level 1 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,664       96.64       96.64
        001 |         16        0.16       96.80
        020 |          1        0.01       96.81
        040 |         57        0.57       97.38
        057 |         53        0.53       97.91
        081 |         95        0.95       98.86
        097 |         16        0.16       99.02
        105 |         15        0.15       99.17
        115 |          7        0.07       99.24
        122 |         30        0.30       99.54
        133 |         13        0.13       99.67
        218 |          4        0.04       99.71
        242 |          6        0.06       99.77
        254 |          9        0.09       99.86
        358 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017