Frequencies for first 10,000 rows of ehrwho4o variable in nhamcsopd2010 dataset :

 orders for rx or |
lab tests sent by |
   administrative |
      personnel - |
         unedited |      Freq.     Percent        Cum.
------------------+-----------------------------------
                . |     10,000      100.00      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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