Table 2.
Data sources, data analysis and quality control methods used
| Data source | Topics noted | Quality control | Methodological approach |
|---|---|---|---|
| Semi-structured telephone interviews (N = 647) | Interviewer: | For both sources of data: | |
| • How each core element is being implemented | • Trained to take extensive notes, including key verbatim phrases to record content of each interview | • Investigators regularly reviewed interviewer’s and TA providers’ interview summaries and field notes | |
| • Adaptations made to the core elements | • Cleaned each summary note, making sure team had data on each relevant topic in interview guide | • Bi-weekly meetings addressed TA and field notes | |
| • Rationale for adaptation | • Indicated verbatim phrases | • Discussions focused on barriers and facilitators to effective implementation, as well as how to address them in TA | |
| • Problems encountered in implementation | • Ensured accurate record of interview content and interview conditions (i.e., level of rapport, apparent distractions, general level of flow for each interview) | • Field notes, summaries, and analytical codes applied to relevant sections of each summary note were entered into qualitative database | |
| • Approaches used to overcome challenges | |||
| Extensive field notes and commentary | TA providers: | ||
| • Barriers and facilitators to implementation fidelity | • Had been coordinators in prior efficacy trials, and were extensively trained and supervised in previous research | ||
| • Problems encountered in implementation | • Thus had clear understanding of fidelity to original implementation methods | ||
| • Approaches used to overcome challenges | • Jotted extensive notes during all TA sessions (delivered by telephone and/or e-mail) | ||
| • Subsequently created detailed commentary about each TA session, operationalized as fieldnotes | |||
| • Were trained on the study domains (barriers and facilitators to intervention fidelity) to ensure recording of relevant data when topics of interest arose during TA | |||
| • Used template for TA fieldnotes, which contained headings for each relevant study topic where notes were taken |