Are single‐item global rating scales the same, better, or worse than multi‐item scales in epilepsy: A scoping review and meta‐analysis

SIGRs are likely comparable to MISs across multiple study and statistical contexts. However, in certain clinical scenarios, MISs will outperform SIGRs and vice versa. Researchers should carefully consider whether SIGRs, MISs, or a combination is most appropriate to answer the research question.