Frequencies for demotype variable in snp2010 dataset :

                           Demo Type |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                                     |      8,692       99.66       99.66
Continuing Care Retirement Community |         28        0.32       99.98
                             ESRD II |          2        0.02      100.00
-------------------------------------+-----------------------------------
                               Total |      8,722      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016