Development of a medication literacy assessment instrument (MELIA) for older people receiving home care.

Patient participation was an integral part of the instrument development. The initial 23 items were optimized based on cognitive interviews with four home care patients. The next steps of the instrument development were based on feedback of health care professionals-encompassing advance practice nurses, regular nurses, pharmacists and general practitioners-during a two-step Delphi process as well as a focus group discussion.