Frequencies for first 10,000 rows of rx3v1c1 variable in namcs2007 dataset :

   for rx3, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,533       65.33       65.33
        001 |        163        1.63       66.96
        020 |         24        0.24       67.20
        028 |          1        0.01       67.21
        040 |        604        6.04       73.25
        057 |        671        6.71       79.96
        081 |         47        0.47       80.43
        087 |        180        1.80       82.23
        097 |        187        1.87       84.10
        105 |        102        1.02       85.12
        115 |        140        1.40       86.52
        122 |        373        3.73       90.25
        133 |        172        1.72       91.97
        218 |         30        0.30       92.27
        242 |        164        1.64       93.91
        254 |        234        2.34       96.25
        331 |          1        0.01       96.26
        358 |        373        3.73       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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