Frequencies for first 10,000 rows of prov1820 variable in pos1999 dataset : resident | program | approved by | other | Freq. Percent Cum. ------------+----------------------------------- | 8,885 88.85 88.85 N | 1,016 10.16 99.01 Y | 99 0.99 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016