Inhaler Use Skills Among Patients with COPD: A Systematic Review of Studies Published 1990–2026, with Emphasis on Evidence from Iran

This project contains the protocol and supporting materials for a review of inhaler-use skills among people with chronic obstructive pulmonary disease (COPD), covering literature published from 1990 to 2026, with emphasis on evidence from Iran. Important: This registration is being created retrospectively. The literature searches and title/abstract screening had already begun before registration. Full-text reports have not yet been retrieved or assessed, and the current study-selection decisions are provisional. This record documents the review methods and their status as of the registration date; it does not represent a prospective registration.