Frequencies for first 10,000 rows of npnmw variable in nhamcsopd2002 dataset :

      nurse |
pract/midwi |
    fe seen |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,398       93.98       93.98
          1 |        602        6.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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