Frequencies for first 10,000 rows of passorg variable in psfhos201207 dataset : Pass | Through | Amount for | Organ | Acquisition | Freq. Percent Cum. ------------+----------------------------------- 0 | 10,000 100.00 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 Feb 2018