Frequencies for first 10,000 rows of eremindo variable in nhamcsopd2007 dataset :

 does opd have |
      computer |
    system for |
 reminders for |
interven/scree |
   ning tests? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        323        3.23        3.23
       unknown |        336        3.36        6.59
not applicable |        133        1.33        7.92
           yes |      3,110       31.10       39.02
            no |      6,098       60.98      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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