Frequencies for first 10,000 rows of attend variable in natl2015 dataset : Attendant | at Birth 1 | Doctor of | Medicine | (MD) | Freq. Percent Cum. ------------+----------------------------------- 1 | 6,420 64.20 64.20 2 | 402 4.02 68.22 3 | 2,548 25.48 93.70 4 | 572 5.72 99.42 5 | 41 0.41 99.83 9 | 17 0.17 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 20 Oct 2016