2. Summary of characteristics of studies in comparisons 3 and 4: multi‐media training.
| Study ID | Total n | Study duration (weeks) | Age | Country | Intervention | Control | Inhaler technique measure | Outcomes |
| Acosta 2009 | 133 | 4 | Adults | USA | Inhaler technique training video; delivered to participant | Asthma education video | Not reported | "Correct usage" of inhaler |
| Arthurs 2014 | 21 | 13 | Children | Ireland | Inhaler technique DVD; delivered to participant | Individual instruction | New inhaler technique measurement tool | Inhaler technique, self‐efficacy, knowledge acquisition |
| Boone 2002 | 36 | 4.3 | Children | UK | Inhaler technique educational computer software ("Space Inhalers"); delivered to participant | Placebo software | 15‐Step checklist | Inhaler technique, asthma knowledge |
| Carpenter 2015 | 91 | 4.3 | Children and adolescents | USA | Inhaler technique video; delivered to participant | Attention control video (about nutrition) | 8‐Step checklist | Inhaler technique, self‐efficacy, ACT |
| Goodyer 2006 | 69 | Outcomes assessed immediately | Adults | UK (Turkish‐ speaking population) |
Multi‐media touch screen training; delivered to participant | Patient information leaflet plus verbal training | Inhaler checklist | Inhaler technique |
| Lirsac 1991 | 45 | 2.1 | Adults and children (10 to 71 years) | France | Inhaler technique video OR inhaler technique video + spacer; delivered to participant | Patient information sheet | 4‐Step checklist | Inhaler technique, FEV1 |
| Savage 2003 | 110 | Outcomes assessed immediately | Children and adults (12 to 87 years) | UK | Multi‐media touch screen training; delivered to participant | Patient information leaflet | Inhaler checklist, global assessment of technique | Inhaler technique, acceptability |
| Self 1983 | 29 | 1 to 16 (mean 6) | Adults | USA | Video training; delivered to participant | Inhaler package insert only | 10‐Step checklist | Inhaler technique, "effectiveness of instruction" |
| Shah 2014 | 50 | Not reported | Not reported | USA | Computer training; delivered to participant | Written training OR no training | "Fixed rubric" used to give a score | Inhaler technique |
ACT: Asthma Control Test; DVD: digital versatile disc; FEV1: forced expiratory volume in one second