Table 4

Summary of data collection
Number and nature of participants/documents Total number of data sources (interviews, focus groups and documents)
Phase 1: Single exploratory case
Interviews Thirteen longitudinal interviews with four breast care nurses: 15
Three interviewed three times.
One interviewed four times.
Plus: one interview with a research nurse
And one interview with a charge nurse
Documents Protocol, ethics application, monitoring reports x 2, final report, Minutes of meetings x 15, field notes of PI and researcher 22
Phase 2: Multiple explanatory case study
Interviews Seven principal investigators and one research assistant 8
Documents Seven trial protocols/proposals 30
Six ethics forms
Five monitoring reports
Seven final reports
Five published papers
Focus One group with three research nurses 9
groups One group with two nurse members of the ethics committee
One group with four PIs
Total 84

PI, principal investigator.

Wells et al.

Wells et al. Trials 2012 13:95   doi:10.1186/1745-6215-13-95

Open Data