Frequencies for first 10,000 rows of renal variable in natl2000 dataset : Renal | disease | Freq. Percent Cum. ------------+----------------------------------- 1 | 11 0.11 0.11 2 | 9,989 99.89 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015