Frequencies for first 10,000 rows of race variable in nhamcsopd1992 dataset :

                Patient race |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                       White |      6,680       66.80       66.80
                       Black |      2,951       29.51       96.31
      Asian/Pacific Islander |        333        3.33       99.64
American Indian/Eskimo/Aleut |         36        0.36      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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