Frequencies for first 10,000 rows of nursepr variable in nhamcsed2005 dataset :

      nurse |
practitione |
     r seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,525       95.25       95.25
        yes |        475        4.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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