Frequencies for first 10,000 rows of emred variable in nhamcsed2006 dataset :

 does emergency dept use electronic |
                   medical records? |      Freq.     Percent        Cum.
------------------------------------+-----------------------------------
                              blank |        105        1.05        1.05
                yes, all electronic |      1,626       16.26       17.31
yes, part paper and part electronic |      4,105       41.05       58.36
                                 no |      3,971       39.71       98.07
                            unknown |        193        1.93      100.00
------------------------------------+-----------------------------------
                              Total |     10,000      100.00

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