The RELIANT checklist: a novel approach to revealing implicit factors in HTA deliberations.

•Implicit factors may play a role in the HTA deliberative process.•Current guidelines do not account for implicit factors in a systematic way.•To assist HTA practitioners in their appraisals, we developed the RELIANT checklist.•This is the first checklist designed to help HTA practitioners reflect on implicit factors that may influence the HTA deliberative process.