Frequencies for first 10,000 rows of whocomp variable in nhamcsed2008 dataset :

who completed the patient record forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
census field rep - abstract after rep p |      6,208       62.08       62.08
census field rep - abstract during rep  |        112        1.12       63.20
                         hospital staff |      2,813       28.13       91.33
            multiple categories checked |        867        8.67      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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