Frequencies for first 10,000 rows of npnmw variable in nhamcsopd2006 dataset :

      nurse |
pract/midwi |
    fe seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,065       90.65       90.65
        Yes |        935        9.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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