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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) 
n%n%p-value
Age (years)    0.82
 25–341211.91372.0 
 35–44190829.2192128.6 
 45–54195930.0200529.8 
 55–64162925.0171325.5 
 65+90913.994914.1 
Sex    0.37
 Male453069.4462068.7 
 Female199630.6210531.3 
Specialty    0.21
 Medical oncology454169.7463068.9 
 Radiation oncology182027.9190028.3 
 Surgical oncology1592.41952.9 
Geographic region    0.32
 West131520.2133219.8 
 Midwest145222.3142121.1 
 Northeast150423.1157023.4 
 South225534.6240235.7 
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