Frequencies for first 10,000 rows of hypertn variable in namcs1995 dataset :

       does |
    patient |
     have - |
hypertensio |
          n |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,864       78.64       78.64
          1 |      2,136       21.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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