Frequencies for first 10,000 rows of physn_ext_fltm_cnt variable in pos1992 dataset : physician | extender - | full time | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,989 99.89 99.89 .01 | 1 0.01 99.90 .11 | 1 0.01 99.91 .24 | 1 0.01 99.92 .36 | 2 0.02 99.94 1.14 | 5 0.05 99.99 6.07 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017