Frequencies for first 10,000 rows of emred variable in nhamcsed2005 dataset :

       does your ed have electronic |
           patient medical records? |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                              blank |        219        2.19        2.19
                yes, all electronic |      2,005       20.05       22.24
yes, part paper and part electronic |      3,603       36.03       58.27
                                 no |      4,094       40.94       99.21
                            unknown |         79        0.79      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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