Frequencies for first 10,000 rows of adrg2cl1 variable in nhamcsed2002 dataset :

 drug class |
     #1 for |
    adverse |
    drug #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,930       99.30       99.30
       0117 |          8        0.08       99.38
       0388 |          2        0.02       99.40
       0626 |          1        0.01       99.41
       0630 |          2        0.02       99.43
       1037 |          1        0.01       99.44
       1265 |          1        0.01       99.45
       1721 |         10        0.10       99.55
       1722 |          1        0.01       99.56
       1727 |          1        0.01       99.57
       1944 |          1        0.01       99.58
       2000 |         13        0.13       99.71
       2087 |          6        0.06       99.77
       2210 |          5        0.05       99.82
       2220 |         14        0.14       99.96
       2250 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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