Frequencies for first 10,000 rows of ebillrec variable in namcs2007 dataset :

does your practice submit claims |
                 electronically? |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
                         unknown |        378        3.78        3.78
             yes, all electronic |      6,000       60.00       63.78
yes, part paper, part electronic |      2,513       25.13       88.91
                              no |      1,109       11.09      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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