Frequencies for first 10,000 rows of whocomp variable in nhamcsed2007 dataset :

who completed the patient record forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                  blank |        111        1.11        1.11
                         hospital staff |      6,331       63.31       64.42
census field rep - abstract after rep p |      3,021       30.21       94.63
            multiple categories checked |        537        5.37      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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