Table 3. Cost Estimates: Model 1 (“minimal service input”).

Area	Asthma Counselling (£)	COPD Counselling (£)	Nonadherent Patients, n	Additional GP Appointments Costs (£)	Total (£)	Total (£)
Model 1: 0% of Patients Nonadherent, Requiring Additional Counselling
pMDIs only – England	9 314 082	1 914 739	-	-		12 347 793
pMDIs and DPIs – England	337 508	781 463	-	-
pMDIs only – 50,000 patients PCN	8274	1701	-	-		10 969
PMDIs and DPIs – 50,000 patients PCN	300	694	-	-
Model 1a: 20% of Patients Nonadherent, Requiring Additional Counselling
pMDIs only – England	9 314 082	1 914 739	499 059	19 578 073	30 806 894	33 876 855
pMDIs and DPIs – England	337 508	781 463	49 732	1 950 989	3 069 961
pMDIs only – 50,000 patients PCN	8274	1701	443	17 391	27 366	30 093
PMDIs and DPIs – 50,000 patients PCN	300	694	44	1733	2727
Model 1b: 40% of Patients Nonadherent, Requiring Additional Counselling
pMDIs only – England	9 314 082	1 914 739	998 117	39 156 146	50 384 967	55 405 917
pMDIs and DPIs – England	337 508	781 463	99 464	3 901 978	5 020 950
pMDIs only – 50,000 patients PCN	8274	1701	887	34 783	44 757	49 217
PMDIs and DPIs – 50,000 patients PCN	300	694	88	3466	4460

Abbreviations: DPI, dry powder inhaler; PCN, primary care network; pMDI, pressurised metered-dose inhaler.