Development of Checklists for Assessing Inhaler Technique
The checklist for Metered-dose inhaler (MDI) was extracted from COPD guidelines 17, 18, and published literature.19-21 The use of inhaler devices was quantitatively assessed by assigning a score to each correct step. We allocated equal weightage and assigned 1 point to each of the total 8 steps (Appendix 1).