Table 2.

Results of the Unadjusted ARIMAX Models Assessing the Association Between the Variables of Interest and Prevalence of Attempts to Quit Smoking

	B No seasonal AR Seasonal AR	Lower CI	Upper CI	p	β No seasonal AR Seasonal AR
Partial point-of-sale ban (2-month lag)	−0.035	−0.217	0.148	.711
	−0.054	−0.241	0.132	.568
Smokefree	−0.063	−0.245	0.120	.502
	−0.063	−0.246	0.119	.496
Increase in age of sale (1-month lag)	0.039	−0.144	0.222	.676
	0.036	−0.146	0.219	.696
Pictorial health warnings	0.035	−0.147	0.218	.705
	0.037	−0.145	0.219	.689
Move of Stop Smoking Services to local authority control (2-month lag)	0.167	−0.014	0.349	.071
	0.168	−0.012	0.349	.067
Licensing of NRT for harm reduction	−0.120	−0.303	0.063	.198
	−0.144	−0.297	0.068	.220
NICE guidance on harm reduction (2-month lag)	−0.025	−0.212	0.161	.789
	−0.046	−0.237	0.144	.633
E-cigarette use for SR	0.017	−0.010	0.043	.222	0.222
	0.017	−0.010	0.043	.216	0.259
Mass media spend	0.004	−0.017	0.025	.699	0.047
	0.006	−0.015	0.028	.575	0.063
NRT use for SR	0.097	0.025	0.169	.009	0.362
	0.096	0.024	0.167	.009	0.357
Roll-your-own smokers	−0.059	−0.268	0.150	.581	−0.079
	−0.062	−0.270	0.146	.560	−0.086
Non-daily smokers	0.018	−0.057	0.094	.630	0.049
	0.019	−0.056	0.094	.619	0.051
Smokers’ expenditure on smoking	−0.084	−0.391	0.223	.592	−0.060
	−0.085	−0.388	0.218	.584	−0.061
Cigarettes per day	−0.039	−0.401	0.323	.831	−0.051
	−0.020	−0.386	0.345	.913	−0.036
Smokers	0.156	−0.102	0.414	.237	0.158
	0.155	−0.106	0.416	.244	0.156
High motivation to quit	0.151	0.041	0.261	.007	0.226
	0.173	0.063	0.283	.002	0.272
Age	−1.015	−1.866	−0.163	.020	−0.159
	−1.003	−1.845	−0.160	.020	−0.156
Lower social grade	−0.211	−0.594	0.171	.279	−0.077
	−0.201	−0.585	0.183	.304	−0.074

AR = Autoregressive correlation; CI = confidence interval; NRT = nicotine replacement therapy; SR = smoking reduction.