The Chatbot Assessment Reporting Tool (CHART) reporting guideline promotes
transparent and comprehensive reporting of studies evaluating the performance of
generative artificial intelligence (AI)-driven chatbots for the purposes of
summarising clinical evidence and providing health advice, referred to here as
chatbot health advice (CHA) studies. CHART is the product of an international,
multi-phase, consensus based initiative involving various stakeholders and comprises
a 12-item checklist with 39 subitems. The checklist includes items on open science,
title and abstract, introduction, model identification, model details, prompt
engineering, query strategy, performance definition and evaluation, statistical
analysis, results, discussion, with an accompanying flow diagram. Each item includes
distinct subitems. This explanation and elaboration article discusses each subitem
and provides a detailed rationale for its inclusion in the CHART checklist.