Frequencies for first 10,000 rows of medasst variable in nhamcsed1995 dataset : medical | assistant | seen | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,619 96.19 96.19 1 | 381 3.81 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016