Frequencies for first 10,000 rows of prov5940 variable in posclia2006 dataset :

 laboratory |
classificat |
     ion 10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,948       99.48       99.48
         00 |         52        0.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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