Frequencies for first 10,000 rows of prov5945 variable in posclia2009 dataset :

 laboratory |
classificat |
      ion 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        290        2.90        2.90
         00 |      9,693       96.93       99.83
         05 |          1        0.01       99.84
         10 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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