Frequencies for first 10,000 rows of othermd variable in nhamcsopd2003 dataset : other md | seen | Freq. Percent Cum. ------------+----------------------------------- no | 9,412 94.12 94.12 yes | 588 5.88 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016