Frequencies for state variable in pch_cancerspecificmeasures_hospital dataset :

      State |      Freq.     Percent        Cum.
------------+-----------------------------------
         CA |          6       18.18       18.18
         FL |          6       18.18       36.36
         MA |          3        9.09       45.45
         NY |          6       18.18       63.64
         OH |          3        9.09       72.73
         PA |          3        9.09       81.82
         TX |          3        9.09       90.91
         WA |          3        9.09      100.00
------------+-----------------------------------
      Total |         33      100.00

by Jean Roth , jroth@nber.org , 15 Nov 2016