Frequencies for first 10,000 rows of timemdfl variable in nhamcsopd1997 dataset : was time | spent with | physician | imputed? | Freq. Percent Cum. ------------+----------------------------------- 0 | 5,894 58.94 58.94 1 | 4,106 41.06 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016