| Change in inhaler technique score | |||||
| Study | Time of rating | Intervention mean (SD) | Control mean (SD) | Total N |
Scale (higher score= better technique) |
| Boone 2002 | Post‐intervention | ‐ | ‐ | ‐ | ‐ |
| Follow‐up (4 wks) | 2.60 (0.60) | 0.50 (0.50) | 36 | Max 15 | |
| Carpenter 2015 | Post‐intervention | 1.12 (1.09) | 0.03 (1.07) | 91 | Max 8 |
| Follow‐up (4 wks) | 0.87 (1.09) | 0.32 (1.14) | 91 | Max 8 | |
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