Frequencies for first 10,000 rows of prov5945 variable in posclia2006 dataset :

 laboratory |
classificat |
      ion 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        322        3.22        3.22
         00 |      9,664       96.64       99.86
         05 |          1        0.01       99.87
         10 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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