Table 2.

Mean (SD) initial and review scores for patients learning to use the Diskhaler or Turbohaler devices

	Diskhaler	Turbohaler	Mean difference (95% CI)	P value
Initial scores	n=38	n=35
Load and prime	0.87 (0.93)	1.83 (0.53)	0.96 (0.68 to 1.31)	<0.001
Exhale to residual volume	1.60 (0.72)	1.61 (0.77)	0.005 (−0.35 to 0.34)	0.976
Hand and breath coordination	1.77 (0.54)	1.94 (0.24)	0.18 (−0.18 to 0.37)	0.068
Breath holding	1.74 (0.50)	1.80 (0.47)	0.06 (−0.16 to 0.29)	0.583
Aware of empty device	1.08 (0.97)	1.57 (0.78)	0.49 (0.2 to 0.9)	0.019
Total	7.05 (2.46)	8.74 (1.98)	1.69 (0.65 to 2.73)	0.002
Review scores	n=37	n=32
Load and prime	0.54 (0.80)	1.81 (0.47)	1.27 (0.95 to 1.58)	<0.001
Exhale to residual volume	1.24 (0.86)	1.63 (0.71)	0.38 (−0.45 to 0.76)	0.48
Hand and breath coordination	1.43 (0.73)	1.78 (0.49)	0.35 (4.5 to 0.64)	0.021
Breath holding	1.30 (0.74)	1.53 (0.76)	0.23 (−0.13 to 0.60)	0.202
Aware of empty device	0.92 (1.01)	1.53 (0.76)	0.61 (0.19 to 1.04)	0.006
Total	5.43 (2.82)	8.28 (1.90)	2.85 (1.70 to 3.99)	<0.001