Frequencies for first 10,000 rows of whocomp variable in nhamcsopd2004 dataset :

who completed the patient record forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                         hospital staff |      4,848       48.48       48.48
census field rep - abstract during rep  |        128        1.28       49.76
census field rep - abstract after rep p |      4,148       41.48       91.24
            multiple categories checked |        634        6.34       97.58
                                unknown |        242        2.42      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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