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Table 2 Response Rates (N = 8477)

From: Does an offer for a free on-line continuing medical education (CME) activity increase physician survey response rate? A randomized trial

  All CME offer (n = 4245) No CME offer (n = 4232) P-value
   % %  
Overall 14.3 12.0 16.6 < .0001
Specialty     
   Family medicine 16.7 14.2 19.1 .0007
   Internal medicine 13.9 12.4 15.5 .013
   Cardiology 12.7 9.9 15.5 < .0001
Region of country     
   Northeast 14.4 12.7 16.1 .03
   South 14.1 12.0 16.1 .001
   Midwest 15.2 12.7 17.6 .003
   West 13.7 10.6 16.8 .0002