Frequencies for first 10,000 rows of prov5950 variable in posclia2009 dataset :

 laboratory |
classificat |
      ion 9 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,477       74.77       74.77
         00 |      2,523       25.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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