Table 1 Summary of responses to semi-structured questions from 43 studies with consumer involvement

1. Were there any benefits of consumer involvement?

1

2

37

3

2. Were there any impacts of involvement on the research study?

11

3

26

3

3. Were there any impacts of involvement on the researcher?

10

3

27

3

4. Were there any problems of involving consumers?

28

3

9

3