Frequencies for first 10,000 rows of othrexam variable in nhamcsopd2001 dataset :

 other exam |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,785       67.85       67.85
          1 |      3,215       32.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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