Frequencies for first 10,000 rows of prov5960 variable in posclia2009 dataset :

 laboratory |
classificat |
      ion 8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,841       68.41       68.41
         00 |      3,159       31.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016