Frequencies for first 10,000 rows of prov5940 variable in posclia2009 dataset :

 laboratory |
classificat |
     ion 10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,240       92.40       92.40
         00 |        760        7.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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