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

       does |
patient now |
     have - |
hypertensio |
          n |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,035       80.35       80.35
        Yes |      1,965       19.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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