Skip to main content

Table 2 Quality assessment of included studies

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

Study ID Allocation concealed? Randomisation performed? Blinding of participants & personnel? Complete outcome data? Absence of reporting bias? Absence of other bias? ITT analysis?
Monetary incentives        
1. Asch et al., 1998 [26] ? ?
2. Deehan et al.,1997 [11] ? ? ? ?
3. Everett et al.,1997 [28] ? ? ?
4. James et al., 2011 [27] ? ? ? X
Non-monetary incentives
5. Baron et al., 2001 [29] ? ? ?
6. McLaren and Shelley, 2000 [30] ? ? ? ? X
7. Pit et al., 2013 [25] X X ?
8. Robertson et al.,2005 [31] ? ? ?
9. Thomson et al.,2004 [32] ? ? ? ?
Questionnaire design/ mode of delivery
10. Drummond et al., 2008 [34] ?
11. Hocking et al., 2006 [35] X ? ?
12. Shosteck and Fairweather,1979 [36] ? ?
13.Seguin et al.,2004 [37] ? ? ?
14. Scott et al., 2011 [24] X X ?
Other design based strategies
15. Akl et al., 2011 [41] X ? ? ?
16. Bonevski et al., 2011[40] ? ? ? ?
17. Gattellari et al., 2012[13] X X ?
18. Gupta et al.,1997 [39] ? ? ? ?
19. Maheux et al., 1989[42] ? ? ? ?
20. Olivarius and Andreasen, 1995 [43] X ? ?
21. Pedrana et al.,2008 [44] X ? ? ?
22. Pirotta et al.,1999 [38] ?
23. Ward et al., 1998 [33] X ?
  1. Legend:
  2. ?→Unclear.
  3. X→No.
  4. √→Yes.