Frequencies for first 10,000 rows of ewhonotor variable in nhamcsopd2011 dataset :

At your OPD, prescriptions and lab test |
orders are not submitted electronically |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                     -9 |     10,000      100.00      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016