Frequencies for first 10,000 rows of eradmhos variable in nhamcsopd2011 dataset : Refer to | ER/Admit to | hospital | Freq. Percent Cum. ------------+----------------------------------- No | 9,933 99.33 99.33 Yes | 67 0.67 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016