Frequencies for first 10,000 rows of rx2v1c1 variable in nhamcsed2007 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,825       48.25       48.25
        001 |        740        7.40       55.65
        020 |          2        0.02       55.67
        028 |          1        0.01       55.68
        040 |        280        2.80       58.48
        057 |      2,427       24.27       82.75
        081 |         47        0.47       83.22
        087 |        267        2.67       85.89
        097 |        181        1.81       87.70
        105 |         86        0.86       88.56
        115 |        230        2.30       90.86
        122 |        541        5.41       96.27
        133 |        173        1.73       98.00
        153 |          1        0.01       98.01
        242 |         65        0.65       98.66
        254 |         72        0.72       99.38
        331 |          3        0.03       99.41
        358 |         45        0.45       99.86
        365 |         12        0.12       99.98
        899 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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