Frequencies for first 10,000 rows of race variable in nhamcsopd1998 dataset :

                patient race |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                       White |      6,257       62.57       62.57
                       Black |      3,444       34.44       97.01
Asian/Other Pacific Islander |        289        2.89       99.90
American Indian/Eskimo/Aleut |         10        0.10      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016