Maricoto 2019.

Methods	Study design: RCT Duration: 52 weeks Location: NR
Participants	Population: adults with COPD or asthma Baseline characteristics: NR Inclusion criteria: aged ≥ 65 years, diagnosis of COPD or asthma, taking any inhaler device (pMDI with or without spacer, DPI or Soft Mist), regular primary care users, to diagnose asthma or COPD at study baseline by GINA and GOLD guidelines Exclusion criteria: severe or acute conditions (unstable cardiovascular status, unstable angina, recent myocardial infarction or pulmonary embolism, unknown haemoptysis, pneumothorax, thoracic, abdominal or eye surgery, acute nausea/vomiting, severe respiratory distress, dementia), intermittent asthma or COPD with mild severity (GOLD I)
Interventions	Treatment arms Health professional‐led Inhaler technique education Usual care
Outcomes	Adverse events, quality of life (CAT, mMRC), CARAT, ACT, AQLQ, SGRQ, CCQ, FEV1, FVC, PEF, MEF 25–75, FEV1/FVC, adherence rate (BMQ), inhaler technique performance
Notes	Identifier: NCT03449316