Frequencies for first 10,000 rows of othdiag variable in nhamcsopd2008 dataset : other | diagnostic/ | screening | test/servic | e | Freq. Percent Cum. ------------+----------------------------------- no | 7,452 74.52 74.52 yes | 2,548 25.48 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016