Frequencies for state variable in pch_cancerspecificmeasures_hospital dataset :

      State |      Freq.     Percent        Cum.
------------+-----------------------------------
         CA |          4       18.18       18.18
         FL |          4       18.18       36.36
         MA |          2        9.09       45.45
         NY |          4       18.18       63.64
         OH |          2        9.09       72.73
         PA |          2        9.09       81.82
         TX |          2        9.09       90.91
         WA |          2        9.09      100.00
------------+-----------------------------------
      Total |         22      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016