Frequencies for first 10,000 rows of eresulte variable in nhamcsed2007 dataset :

  does ed have |
  computerized |
    system for |
viewing of lab |
      results? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        103        1.03        1.03
           yes |      9,028       90.28       91.31
            no |        869        8.69      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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