Frequencies for first 10,000 rows of npnmw variable in nhamcsopd2005 dataset :

      nurse |
pract/midwi |
    fe seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,360       93.60       93.60
        yes |        640        6.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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