Frequencies for first 10,000 rows of resint variable in nhamcsopd1994 dataset : resident/in | tern seen | Freq. Percent Cum. ------------+----------------------------------- 0 | 7,851 78.51 78.51 1 | 2,149 21.49 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016