Frequencies for first 10,000 rows of prov5180 variable in pos1997 dataset : medication | aides/techs | -contract | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,991 99.91 99.91 .01 | 1 0.01 99.92 .03 | 1 0.01 99.93 .11 | 3 0.03 99.96 .36 | 2 0.02 99.98 1.14 | 1 0.01 99.99 1.6 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016