Frequencies for first 10,000 rows of eremindo variable in nhamcsopd2008 dataset :

 does opd have |
      computer |
    system for |
 reminders for |
interven/scree |
   ning tests? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        309        3.09        3.09
       unknown |        803        8.03       11.12
           yes |      3,138       31.38       42.50
            no |      5,750       57.50      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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