Frequencies for first 10,000 rows of proc62d variable in namcs1993 dataset : service #6 | procedure | code - 2 | digits | Freq. Percent Cum. ------------+----------------------------------- 00 | 9,996 99.96 99.96 81 | 1 0.01 99.97 88 | 2 0.02 99.99 93 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016