Frequencies for first 10,000 rows of nochron variable in namcs2005 dataset :

       does |
patient now |
have - none |
     of the |
     listed |
    chronic |
 conditions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,959       49.59       49.59
          1 |      4,711       47.11       96.70
          2 |        330        3.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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