Frequencies for first 10,000 rows of whocomp variable in namcs1999 dataset :

who completed the patient record forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                              Physician |      1,977       19.77       19.77
                           Office staff |      3,140       31.40       51.17
Census field rep (abstract from record) |      2,787       27.87       79.04
                                  Other |        165        1.65       80.69
            Multiple categories checked |      1,346       13.46       94.15
                                Unknown |        585        5.85      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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