Frequencies for first 10,000 rows of htn variable in namcs2009 dataset :

       does |
patient now |
      have: |
hypertensio |
          n |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      6,970       69.70       69.70
        yes |      3,030       30.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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