Frequencies for first 10,000 rows of hivaids variable in nhamcsed1995 dataset :

       does |
patient now |
     have - |
  hiv/aids? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,939       99.39       99.39
          1 |         61        0.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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