Frequencies for first 10,000 rows of rx2v1c1 variable in namcs2009 dataset :

   for rx2, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,373       43.73       43.73
        001 |        350        3.50       47.23
        020 |         21        0.21       47.44
        028 |          3        0.03       47.47
        040 |        933        9.33       56.80
        057 |      1,195       11.95       68.75
        081 |         68        0.68       69.43
        087 |        273        2.73       72.16
        097 |        273        2.73       74.89
        105 |         83        0.83       75.72
        113 |         40        0.40       76.12
        115 |        245        2.45       78.57
        122 |        593        5.93       84.50
        133 |        329        3.29       87.79
        218 |         40        0.40       88.19
        242 |        269        2.69       90.88
        254 |        316        3.16       94.04
        331 |          1        0.01       94.05
        358 |        591        5.91       99.96
        365 |          1        0.01       99.97
        899 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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