Frequencies for first 10,000 rows of rx8v2c2 variable in nhamcsopd2009 dataset :

   for rx8, |
 level 2 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,869       98.69       98.69
        005 |          3        0.03       98.72
        015 |          2        0.02       98.74
        019 |          2        0.02       98.76
        046 |         13        0.13       98.89
        053 |          4        0.04       98.93
        064 |          7        0.07       99.00
        065 |         19        0.19       99.19
        066 |          1        0.01       99.20
        083 |         39        0.39       99.59
        098 |          2        0.02       99.61
        101 |          2        0.02       99.63
        117 |          4        0.04       99.67
        123 |          7        0.07       99.74
        124 |          2        0.02       99.76
        125 |          1        0.01       99.77
        129 |          2        0.02       99.79
        130 |          1        0.01       99.80
        192 |          2        0.02       99.82
        251 |          1        0.01       99.83
        266 |          1        0.01       99.84
        289 |          3        0.03       99.87
        320 |         10        0.10       99.97
        340 |          1        0.01       99.98
        423 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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