Table 1.

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.