Frequencies for first 10,000 rows of nursepr variable in nhamcsed2007 dataset :

      nurse |
practitione |
     r seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,577       95.77       95.77
        yes |        423        4.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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