Frequencies for first 10,000 rows of escripo variable in nhamcsopd2008 dataset : if yes, are | prescriptions | sent | electronically | ? | Freq. Percent Cum. ---------------+----------------------------------- blank | 309 3.09 3.09 unknown | 475 4.75 7.84 not applicable | 5,850 58.50 66.34 yes | 2,187 21.87 88.21 no | 1,179 11.79 100.00 ---------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016