Frequencies for first 10,000 rows of extracoverageingap variable in ma2013 dataset : Extra | Coverage in | Gap | Freq. Percent Cum. ------------+----------------------------------- | 8,638 86.38 86.38 Y | 1,362 13.62 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016