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

 does opd have |
      computer |
    system for |
    orders for |
prescriptions? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        309        3.09        3.09
       unknown |        401        4.01        7.10
           yes |      3,841       38.41       45.51
            no |      5,287       52.87       98.38
    turned off |        162        1.62      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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