Frequencies for first 10,000 rows of medscrnx variable in nhamcsed2001 dataset :

    medical |
  screening |
       exam |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,101       41.01       41.01
          1 |      5,899       58.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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