Proportion (%) of participants who were able to use Spiromax, Easyhaler or Turbuhaler without observed errors in steps 1–3
| Spiromax | Easyhaler | Turbuhaler | Spiromax vs Easyhaler, p value | Spiromax vs Turbuhaler, p value | Easyhaler vs Turbuhaler, p value | |
|---|---|---|---|---|---|---|
| Step 1 | 37.5 | 0 | 9.2 | <0.001* | <0.001 | <0.006* |
| Step 2 | 93.3 | 58.3 | 76.7 | <0.001 | <0.001 | <0.004 |
| Step 3 | 99.2 | 95.8 | 99.2 | ns | ns | ns |
*One observation was added to the Easyhaler group in order to perform the statistical analysis. As such, these values might be an underestimate of the actual differences.
ns, not significant.