Frequencies for first 10,000 rows of rehab_unit_sw variable in pos2012 dataset Rehabilitat | ion Unit | Switch | Freq. Percent Cum. ------------+----------------------------------- | 8,121 81.21 81.21 N | 1,673 16.73 97.94 Y | 206 2.06 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016