Frequencies for first 10,000 rows of rx1v2c2 variable in nhamcsopd2007 dataset :

   for rx1, |
 level 2 of |
multum drug |
category #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,364       93.64       93.64
        005 |         24        0.24       93.88
        012 |         15        0.15       94.03
        015 |         73        0.73       94.76
        019 |          8        0.08       94.84
        053 |          3        0.03       94.87
        064 |         47        0.47       95.34
        065 |         45        0.45       95.79
        066 |          3        0.03       95.82
        083 |         96        0.96       96.78
        098 |         15        0.15       96.93
        100 |          3        0.03       96.96
        101 |         53        0.53       97.49
        109 |         57        0.57       98.06
        117 |          9        0.09       98.15
        120 |          1        0.01       98.16
        123 |         35        0.35       98.51
        124 |         10        0.10       98.61
        125 |          4        0.04       98.65
        127 |          4        0.04       98.69
        129 |         24        0.24       98.93
        136 |         19        0.19       99.12
        146 |          2        0.02       99.14
        151 |         12        0.12       99.26
        192 |          6        0.06       99.32
        251 |          3        0.03       99.35
        253 |          3        0.03       99.38
        257 |          2        0.02       99.40
        289 |         10        0.10       99.50
        303 |          5        0.05       99.55
        320 |         37        0.37       99.92
        323 |          2        0.02       99.94
        332 |          2        0.02       99.96
        340 |          2        0.02       99.98
        363 |          1        0.01       99.99
        377 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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