Frequencies for first 10,000 rows of rx3v1c1 variable in nhamcsopd2008 dataset :

   for rx3, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,439       64.39       64.39
        001 |        173        1.73       66.12
        020 |         29        0.29       66.41
        028 |          5        0.05       66.46
        040 |        575        5.75       72.21
        057 |        773        7.73       79.94
        081 |         51        0.51       80.45
        087 |        226        2.26       82.71
        097 |        158        1.58       84.29
        105 |        100        1.00       85.29
        115 |        219        2.19       87.48
        122 |        303        3.03       90.51
        133 |        208        2.08       92.59
        218 |         30        0.30       92.89
        242 |        207        2.07       94.96
        254 |        164        1.64       96.60
        331 |          9        0.09       96.69
        358 |        304        3.04       99.73
        365 |         27        0.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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