Table 6.

Associations between the predictors and the apps use duration

Predictors’ category	Predictors	b	OR	SE	p value*	95% CI
Demographics	Country (Switzerland vs. France)	−0.411	0.663	0.147	0.005	0.497	0.885
	Age	0.019	0.981	0.009	0.031	0.964	0.998
	Sex	−0.040	0.961	0.134	0.764	0.739	1.249
Treatment/control	Experiment group	−0.495	0.610	0.126	<0.001	0.476	0.780
Baseline	Number of years smoking	0.001	1.001	0.009	0.934	0.983	1.018
	Cigarettes/day as measured	−0.009	0.991	0.010	0.391	0.972	1.011
	Number of minutes before the first cigarette of the day	−0.112	0.894	0.064	0.081	0.787	1.014
	Use/smoke other tobacco products	−0.001	0.999	0.055	0.985	0.898	1.112
	Use of heated tobacco product	0.078	1.081	0.140	0.576	0.822	1.423
	Use of e-cigarettes	−0.094	0.910	0.066	0.154	0.799	1.036
	Use of nicotine medications	−0.049	0.952	0.185	0.791	0.662	1.369
	Depression	0.184	1.202	0.125	0.141	0.941	1.536
Follow-up after 1 month	Cigarettes/day	0.045	1.046	0.013	<0.001	1.018	1.073
	Use of heated tobacco product	0.220	1.246	0.290	0.449	0.705	2.200
	Use of e-cigarettes	0.049	1.050	0.094	0.603	0.874	1.261
	Use of nicotine medications	0.043	1.044	0.163	0.791	0.759	1.437
	Current use of any smoking cessation app	0.614	1.847	0.135	<0.001	1.418	2.407
	Intention to quit smoking	0.916	2.500	0.148	<0.001	1.869	3.345
	Perceived helpfulness of the app	0.340	1.404	0.065	<0.001	1.237	1.595
	Having quit smoking	−0.249	0.779	0.146	0.087	0.586	1.037

b, beta coefficient; OR, odds ratio; SE, standard error; CI, confidence interval.

*Significant at least at p < 0.05.