Frequencies for first 10,000 rows of leftbmse variable in nhamcsed2008 dataset :

left before |
    medical |
  screening |
       exam |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,845       98.45       98.45
        yes |        155        1.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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