Frequencies for first 10,000 rows of whocomp variable in nhamcsed2002 dataset :

who completed the patient record forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                         Hospital staff |      5,985       59.85       59.85
Census Field Rep - Abstract during rep  |        216        2.16       62.01
Census Field Rep - Abstract after rep p |      3,242       32.42       94.43
            Multiple categories checked |        361        3.61       98.04
                                Unknown |        196        1.96      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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