Frequencies for first 10,000 rows of whocomp variable in namcs2009 dataset :

who completed the patient record forms? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                unknown |        133        1.33        1.33
                              physician |      1,128       11.28       12.61
                           office staff |      2,895       28.95       41.56
census field rep (abstract from record) |      4,960       49.60       91.16
                                  other |        121        1.21       92.37
            multiple categories checked |        763        7.63      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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