Table 2. Adjusted association between client demographic and intervention characteristics and outcomes.

	Completion						Quit success (CO-validated)
	Model 1			Model 2			Model 1			Model 2
	OR	95% CI		OR	95% CI		OR	95% CI		OR	95% CI
Neighbourhood deprivation (per IMD decile)	0.949	0.947	0.951	0.955	0.953	0.958	0.957	0.955	0.959	0.968	0.966	0.970
Men compared with women	0.973	0.961	0.985	0.959	0.947	0.971	1.040	1.028	1.052	1.016	1.005	1.028
Age (per year increase)	1.022	1.021	1.022	1.022	1.021	1.022	1.018	1.018	1.019	1.018	1.018	1.019
Later compared with first supported attempt	1.090	1.075	1.105	1.098	1.083	1.113	0.947	0.936	0.959	0.962	0.950	0.973
Medication, reference none
Single NRT	1.119	1.095	1.143	1.119	1.095	1.144	1.487	1.453	1.523	1.473	1.439	1.508
Bupropion	1.539	1.438	1.648	1.502	1.403	1.609	1.906	1.793	2.026	1.808	1.700	1.922
Combination NRT	1.613	1.579	1.649	1.617	1.581	1.653	2.295	2.242	2.348	2.283	2.230	2.337
Varenicline	1.719	1.680	1.758	1.676	1.637	1.715	2.918	2.851	2.988	2.764	2.699	2.830
Intervention type, reference one-to-one
Group	1.648	1.585	1.713	1.635	1.573	1.700	1.642	1.597	1.688	1.618	1.573	1.663
Drop-in	1.142	1.116	1.168	1.135	1.110	1.162	0.917	0.899	0.935	0.908	0.890	0.925
Other	1.265	1.186	1.349	1.280	1.201	1.365	1.182	1.119	1.249	1.207	1.142	1.275
Intervention setting, reference specialist service
Primary care	0.656	0.645	0.668	0.659	0.647	0.670	0.812	0.799	0.824	0.817	0.804	0.830
Pharmacy	0.597	0.585	0.609	0.601	0.589	0.614	1.055	1.036	1.074	1.062	1.044	1.082
Other	1.136	1.095	1.179	1.129	1.088	1.171	0.930	0.901	0.960	0.921	0.892	0.951
Occupational status, reference employed
Not employed				0.873	0.860	0.887				0.793	0.781	0.804
Unable to code				0.844	0.828	0.860				0.806	0.792	0.821
Prescription charge, reference pays
Exempt				0.924	0.910	0.938				0.840	0.829	0.851
Unknown				0.969	0.948	0.991				0.811	0.793	0.828