Frequencies for first 10,000 rows of prov3455 variable in pos1999 dataset : srv: mental | health-onsi | te-resid | Freq. Percent Cum. ------------+----------------------------------- | 7,387 73.87 73.87 N | 1,150 11.50 85.37 Y | 1,463 14.63 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016