Frequencies for first 10,000 rows of papliq variable in namcs2006 dataset :

 pap test - |
liquid-base |
          d |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,906       99.06       99.06
        yes |         94        0.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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