Frequencies for chainname variable in hcris2552_96_2002 dataset :

               chainname |      Freq.     Percent        Cum.
-------------------------+-----------------------------------
                         |      6,197       99.98       99.98
MEMORIAL HEALTH SERVICES |          1        0.02      100.00
-------------------------+-----------------------------------
                   Total |      6,198      100.00

by Jean Roth , jroth@nber.org , 8 Sep 2018