Frequencies for first 10,000 rows of whocomp variable in nhamcsopd2011 dataset :

Who completed the Patient Record Forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
Census Field Rep - Abstract after rep p |      7,430       74.30       74.30
Census Field Rep - Abstract during rep  |        194        1.94       76.24
                         Hospital staff |      2,136       21.36       97.60
            Multiple categories checked |        240        2.40      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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