Frequencies for first 10,000 rows of prov5180 variable in pos2005 dataset : medication | aides/techs | -contract | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,998 99.98 99.98 .1 | 1 0.01 99.99 3.86 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016