Frequencies for first 10,000 rows of otherob variable in natl1989 dataset : Other | Obstetric | Procedures | Freq. Percent Cum. ------------+----------------------------------- 1 | 73 0.73 0.73 2 | 9,873 98.73 99.46 9 | 54 0.54 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016