Table 6. Secondary outcomes from interviews held at 12 months after intervention.

		Intervention			Control
		n	Mean	SD	N	Mean	SD	Adjusted mean difference	95% CI for difference	P-value	Point estimate favours
EQ-5D(quality of life)	Baseline	54	0.74	0.32	56	0.76	0.24	-0.04	-0.12 to 0.04	0.357	control
	12 months	54	0.82	0.25	56	0.87	0.21
AQ20(quality of life)	Baseline	55	13.6	4.6	56	13.9	3.7	-0.78	-2.58 to -1.02	0.391	Intervention
	12 months	55	11.5	5.9	56	12.3	5.5
North of England (symptoms)	Baseline	133	13.3	5.4	131	13.5	5.1	-0.04	-1.16 to 1.09	0.949	Intervention
	12 months	133	9.9	5.0	131	10.1	4.2
Asthma self-efficacy	Baseline	129	5.7	2.1	131	5.9	1.9	0.25	-0.13 to 0.63	0.188	Intervention
	12 months	129	6.4	1.8	131	6.3	1.6

In each model, the standard errors are adjusted for clustering by practice and for baseline value of outcome, BTS Step (3,4 or 5 vs. 1 or 2), number of GP partners, practice asthma admission rate, per cent of practice list that is south Asian and number of south Asians on practice list. SD is standard deviation