Frequencies for first 10,000 rows of prov5965 variable in posclia2006 dataset :

 laboratory |
classificat |
      ion 3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      3,254       32.54       32.54
         00 |      6,746       67.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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