Frequencies for first 10,000 rows of rx2v1c1 variable in nhamcsed2009 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,941       49.41       49.41
        001 |        770        7.70       57.11
        028 |          1        0.01       57.12
        040 |        235        2.35       59.47
        057 |      2,486       24.86       84.33
        081 |         38        0.38       84.71
        087 |        245        2.45       87.16
        097 |        184        1.84       89.00
        105 |        105        1.05       90.05
        113 |         26        0.26       90.31
        115 |        198        1.98       92.29
        122 |        415        4.15       96.44
        133 |        170        1.70       98.14
        218 |          1        0.01       98.15
        242 |         55        0.55       98.70
        254 |         60        0.60       99.30
        331 |         16        0.16       99.46
        358 |         31        0.31       99.77
        365 |         22        0.22       99.99
        899 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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