Frequencies for first 10,000 rows of ecpoee variable in nhamcsed2006 dataset :

      does emr |
system include |
  computerized |
    orders for |
prescriptions? |      Freq.     Percent        Cum.
---------------+-----------------------------------
           yes |      3,233       32.33       32.33
            no |      2,172       21.72       54.05
       unknown |        326        3.26       57.31
not applicable |      4,164       41.64       98.95
         blank |        105        1.05      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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