Frequencies for first 10,000 rows of adrg1cl3 variable in nhamcsed2002 dataset :

   adrg1cl3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,998       99.98       99.98
       1374 |          1        0.01       99.99
       1943 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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