Frequencies for first 10,000 rows of prov6240 variable in pos2006 dataset : srv: | psychiatric | child/adole | scent | Freq. Percent Cum. ------------+----------------------------------- | 8,710 87.10 87.10 0 | 1,273 12.73 99.83 1 | 12 0.12 99.95 2 | 3 0.03 99.98 3 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016