Table 5. Secondary outcomes from interviews held at 3 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	68	0.78	0.30	72	0.76	0.25	0.04	-0.05 to 0.12	0.374	Intervention
	3 months	68	0.83	0.29	72	0.82	0.29
AQ20 (quality of life)	Baseline	71	13.3	4.5	75	13.8	4.3	-2.56	-3.89 to -1.24	<0.001	Intervention
	3 months	71	10.8	5.9	75	13.3	4.7
North of England (symptoms)	Baseline	158	13.4	5.4	162	13.7	5.2	-0.64	-1.55 to 0.28	0.169	Intervention
	3 months	158	9.5	4.9	162	10.4	4.8
Asthma self-efficacy	Baseline	152	5.9	2.1	160	5.9	1.9	0.44	0.05 to 0.82	0.027	Intervention
	3 months	152	6.7	2.1	160	6.3	1.9

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