Frequencies for first 10,000 rows of birattnd variable in natl1999 dataset : Attendant | at birth | Freq. Percent Cum. ------------+----------------------------------- 1 | 9,551 95.51 95.51 2 | 152 1.52 97.03 3 | 264 2.64 99.67 5 | 33 0.33 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015