Frequencies for first 10,000 rows of rx4v1c1 variable in nhamcsopd2010 dataset :

   for rx4, |
 level 1 of |
multum drug |
category #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,098       70.98       70.98
        001 |         91        0.91       71.89
        020 |         30        0.30       72.19
        028 |          3        0.03       72.22
        040 |        492        4.92       77.14
        057 |        632        6.32       83.46
        081 |         54        0.54       84.00
        087 |        193        1.93       85.93
        097 |        138        1.38       87.31
        105 |         65        0.65       87.96
        113 |         16        0.16       88.12
        115 |        234        2.34       90.46
        122 |        172        1.72       92.18
        133 |        149        1.49       93.67
        218 |         33        0.33       94.00
        242 |        179        1.79       95.79
        254 |        103        1.03       96.82
        331 |          1        0.01       96.83
        358 |        316        3.16       99.99
        365 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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