Frequencies for first 10,000 rows of nursaid variable in nhamcsopd1994 dataset :

    nurse`s |
  aide seen |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,556       95.56       95.56
          1 |        444        4.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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