Frequencies for first 10,000 rows of othpr42d variable in nhamcsopd2005 dataset : procedure 4 | - 2 digit | Freq. Percent Cum. ------------+----------------------------------- 00 | 10,000 100.00 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016