Frequencies for first 10,000 rows of prov5970 variable in posclia2008 dataset :

 laboratory |
classificat |
      ion 7 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,412       64.12       64.12
         00 |      3,588       35.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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