Frequencies for first 10,000 rows of demotype variable in ma2007 dataset :

                           Demo Type |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                                     |      9,986       99.86       99.86
                              ESRD I |         14        0.14      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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