Frequencies for first 10,000 rows of rx7v1c1 variable in nhamcsopd2009 dataset :

   for rx7, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,724       87.24       87.24
        001 |         45        0.45       87.69
        020 |         13        0.13       87.82
        028 |          5        0.05       87.87
        040 |        206        2.06       89.93
        057 |        273        2.73       92.66
        081 |         25        0.25       92.91
        087 |         87        0.87       93.78
        097 |         43        0.43       94.21
        105 |         17        0.17       94.38
        113 |         15        0.15       94.53
        115 |        128        1.28       95.81
        122 |         77        0.77       96.58
        133 |         72        0.72       97.30
        218 |         22        0.22       97.52
        242 |         73        0.73       98.25
        254 |         16        0.16       98.41
        358 |        156        1.56       99.97
        365 |          2        0.02       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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