Frequencies for first 10,000 rows of rx1v1c2 variable in nhamcsopd2007 dataset :

   for rx1, |
 level 1 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,364       93.64       93.64
        001 |        112        1.12       94.76
        020 |          2        0.02       94.78
        040 |         10        0.10       94.88
        057 |         98        0.98       95.86
        081 |         96        0.96       96.82
        097 |         72        0.72       97.54
        105 |        100        1.00       98.54
        115 |         10        0.10       98.64
        122 |         77        0.77       99.41
        133 |         33        0.33       99.74
        218 |          1        0.01       99.75
        242 |          3        0.03       99.78
        254 |          2        0.02       99.80
        331 |          2        0.02       99.82
        358 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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