Frequencies for first 10,000 rows of castage variable in namcs2007 dataset :

      stage of |
     patient's |
        cancer |      Freq.     Percent        Cum.
---------------+-----------------------------------
       unknown |        186        1.86        1.86
not applicable |      9,677       96.77       98.63
       in situ |         38        0.38       99.01
         local |         71        0.71       99.72
      regional |         18        0.18       99.90
       distant |         10        0.10      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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