Frequencies for first 10,000 rows of whocomp variable in namcs2007 dataset :

who completed the patient record forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                unknown |        314        3.14        3.14
                              physician |      1,220       12.20       15.34
                           office staff |      2,176       21.76       37.10
census field rep (abstract from record) |      5,173       51.73       88.83
                                  other |        180        1.80       90.63
            multiple categories checked |        937        9.37      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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