Frequencies for first 10,000 rows of ot_srvc_cd variable in pos2007 dataset : srv: | occupationa | l therapy | Freq. Percent Cum. ------------+----------------------------------- | 5,479 54.79 54.79 0 | 1,207 12.07 66.86 1 | 1,384 13.84 80.70 2 | 1,522 15.22 95.92 3 | 408 4.08 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017