Frequencies for first 10,000 rows of prov5960 variable in posclia2008 dataset :

 laboratory |
classificat |
      ion 8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,010       70.10       70.10
         00 |      2,990       29.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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