Frequencies for first 10,000 rows of rx2v1c1 variable in nhamcsopd2008 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      5,024       50.24       50.24
        001 |        302        3.02       53.26
        020 |         66        0.66       53.92
        028 |          5        0.05       53.97
        040 |        729        7.29       61.26
        057 |      1,231       12.31       73.57
        081 |         77        0.77       74.34
        087 |        220        2.20       76.54
        097 |        240        2.40       78.94
        105 |        160        1.60       80.54
        115 |        264        2.64       83.18
        122 |        479        4.79       87.97
        133 |        261        2.61       90.58
        218 |         23        0.23       90.81
        242 |        293        2.93       93.74
        254 |        218        2.18       95.92
        331 |          5        0.05       95.97
        358 |        386        3.86       99.83
        365 |         15        0.15       99.98
        899 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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