Frequencies for hivaids variable in snp2013 dataset :

   HIV/AIDS |      Freq.     Percent        Cum.
------------+-----------------------------------
            |     11,875       99.94       99.94
          * |          7        0.06      100.00
------------+-----------------------------------
      Total |     11,882      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016