Frequencies for first 10,000 rows of prov5975 variable in posclia2008 dataset :

 laboratory |
classificat |
      ion 6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      5,774       57.74       57.74
         00 |      4,226       42.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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