Frequencies for first 10,000 rows of ewhounkr variable in namcs2011 dataset :

    Orders for Rx or lab tests sent by: |
                       unknown - edited |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
Not applicable (Not submitted electroni |      3,067       30.67       30.67
                      Box is not marked |      6,299       62.99       93.66
                          Box is marked |        634        6.34      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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