Frequencies for first 10,000 rows of whocomp variable in namcs2005 dataset :

who completed the patient record forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                              Physician |      1,771       17.71       17.71
                           Office staff |      2,482       24.82       42.53
Census field rep (abstract from record) |      3,694       36.94       79.47
                                  Other |        192        1.92       81.39
            Multiple categories checked |      1,517       15.17       96.56
                                Unknown |        344        3.44      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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