Frequencies for first 10,000 rows of eresulto variable in nhamcsopd2009 dataset :

 does opd have |
  computerized |
    system for |
viewing of lab |
      results? |      Freq.     Percent        Cum.
---------------+-----------------------------------
       unknown |        336        3.36        3.36
           yes |      8,128       81.28       84.64
            no |      1,536       15.36      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016