Frequencies for first 10,000 rows of prov5970 variable in posclia2009 dataset :

 laboratory |
classificat |
      ion 7 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,369       63.69       63.69
         00 |      3,631       36.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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