Frequencies for first 10,000 rows of prov5180 variable in pos1996 dataset : medication | aides/techs | -contract | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,997 99.97 99.97 .11 | 1 0.01 99.98 1.14 | 1 0.01 99.99 2.16 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016