Skip to main content

Table 3 Monetary and non-monetary incentives

From: The effectiveness of recruitment strategies on general practitioner’s survey response rates – a systematic review

Monetary incentives Intervention OR 95%CI
Deehan et al., 1997 [11] £10 vs no incentive 3.14 2.37, 4.15
  £5 vs no incentive 2.22 1.66, 2.98
  £10 charity donation vs no incentive 1.20 0.85, 1.69
  £5 charity donation vs no incentive 1.12 0.79, 1.57
  Pooled (Deehan, 1997) 1.87 1.48, 2.36
Everett et al., 1997 [28] $1bill vs no incentive 1.86 1.34, 2.57
  Pooled 1.87 1.55, 2.26
Nonmonetary incentives    
Baron et al., 2001 [29] Lottery to win weekend trip vs No incentive 1.31 1.02, 1.70
McLaren and Shelley, 2000 [30] Awareness of prize vs no awareness of prize 1.17 0.84, 1.61
Pit et al., 2013 [25] Pen vs no incentive 1.85 0.91, 3.77
Robertson et al., 2005 [31] AU$2 Lottery vs no incentive 1.78 1.23, 2.60
  Pooled 1.39 1.15, 1.69
Large vs small incentives    
Asch et al., 1998 [26] US$5 vs US$2 1.83 1.43, 2.35
Deehan et al., 1997 [11] £10 cash vs £5 cash 1.41 1.06,1.87
  £10 charity donation vs $5 1.08 0.73,1.58
Thomson et al., 2004 [32] Lottery to win a large prize (6 bottles of champagne) vs six chances to win one bottle 1.47 1.05, 2.08
  Pooled 1.47 1.19,1.81
Prepaid vs promised incentives    
James et al., 2011 [27] US$25 prepaid vs US$25 promised 2.88 1.70, 4.89