Frequencies for first 10,000 rows of castage variable in namcs2008 dataset :

      stage of |
     patient's |
        cancer |      Freq.     Percent        Cum.
---------------+-----------------------------------
       unknown |        162        1.62        1.62
not applicable |      9,706       97.06       98.68
       in situ |         27        0.27       98.95
         local |         76        0.76       99.71
      regional |         21        0.21       99.92
       distant |          8        0.08      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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