Table 1 IGEST development process by methods and results
From: The International Guideline Evaluation Screening Tool (IGEST): development and validation
| Â | METHODS | RESULTS | ||||
|---|---|---|---|---|---|---|
Steps and nature of activity | IGEST version | Methods | People involved | Number of items | Other modifications | |
Phase I Development | 1 Define the IGEST scope |  | Analyse CPGs’ methodological quality standards | ISS project steering group |  |  |
2 Generation of items | IGEST initial version | 2a. Literature review and item extraction | ISS project steering group | 151 items from literature review | Â | |
32 items after extraction | Removed 119 items for overlapping (n=62), other contents (n=52), lack of clarity (n=5) | |||||
IGEST vers.1 | 2b. Focus group on IGEST refinement | 7 experts | 16 | Removed and merged 13 and 3 items, respectively. 16 items grouped into 4 dimensions (management of conflict of interest, quality of evidence and consistency, panel composition, and reporting) | ||
3 Testing feasibility/usability | IGEST vers.2 | Pilot testing | 2 external researchers | 16 | Changes in item sequence. Dimension 4 on reporting was considered as primary conditions: - 3 dimensions (management of conflict of interest, quality of evidence and consistency, panel composition) | |
Phase II Content validity | 4 Content validity index | IGEST vers.3 | 4a. CVI - first round | 14 experts | 16 | Rewording of items Sentence specifications with some footnotes |
IGEST final version | 4b. CVI - second round | |||||