Frequencies for first 10,000 rows of whocomp variable in nhamcsopd2003 dataset :

who completed the patient record forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                         hospital staff |      5,102       51.02       51.02
census field rep - abstract during rep  |         40        0.40       51.42
census field rep - abstract after rep p |      4,202       42.02       93.44
                                  other |         72        0.72       94.16
            multiple categories checked |        451        4.51       98.67
                                unknown |        133        1.33      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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