Frequencies for first 10,000 rows of papunsp variable in nhamcsopd2006 dataset :

 pap test - |
unspecified |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,909       99.09       99.09
        Yes |         91        0.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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