Frequencies for first 10,000 rows of rx2v1c2 variable in namcs2013 dataset :

   For RX2, |
 level 1 of |
MULTUM drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,343       93.43       93.43
        001 |         36        0.36       93.79
        040 |        102        1.02       94.81
        057 |        133        1.33       96.14
        081 |        159        1.59       97.73
        087 |          1        0.01       97.74
        097 |         33        0.33       98.07
        105 |         25        0.25       98.32
        115 |         21        0.21       98.53
        122 |         81        0.81       99.34
        133 |         30        0.30       99.64
        218 |          7        0.07       99.71
        242 |          3        0.03       99.74
        254 |          5        0.05       99.79
        358 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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