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Table 1 Demographic characteristics and response rate by recruitment strategy

From: A randomized trial of mail and email recruitment strategies for a physician survey on clinical trial accrual

 Mail-based recruitment (n = 6526)Email-based recruitment (n = 6725) 
Age (years)    0.82
Sex    0.37
Specialty    0.21
 Medical oncology454169.7463068.9 
 Radiation oncology182027.9190028.3 
 Surgical oncology1592.41952.9 
Geographic region    0.32
Response rate77011.83024.5< 0.01
Response mode (n = 1072)
 Returned paper survey19425.200.0 
 Completed survey online57674.8302100.0 
  1. NOTE: Column percentages displayed in table