Frequencies for first 10,000 rows of prov3455 variable in pos1995 dataset : srv: mental | health-onsi | te-resid | Freq. Percent Cum. ------------+----------------------------------- | 7,523 75.23 75.23 N | 1,161 11.61 86.84 Y | 1,316 13.16 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016