Frequencies for first 10,000 rows of prov5975 variable in posclia2006 dataset :

 laboratory |
classificat |
      ion 6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,114       61.14       61.14
         00 |      3,886       38.86      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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