Frequencies for first 10,000 rows of exchsume variable in nhamcsed2011 dataset :

 Does your ED exchange clinical |
  summaries electronically with |
            any other providers |      Freq.     Percent        Cum.
--------------------------------+-----------------------------------
                          Blank |     10,000      100.00      100.00
--------------------------------+-----------------------------------
                          Total |     10,000      100.00

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