Frequencies for first 10,000 rows of whocomp variable in nhamcsopd2009 dataset :

who completed the patient record forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
census field rep - abstract after rep p |      7,183       71.83       71.83
census field rep - abstract during rep  |         67        0.67       72.50
                         hospital staff |      1,654       16.54       89.04
                                  other |        155        1.55       90.59
            multiple categories checked |        941        9.41      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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