Response link by email	B	SE	Wald	OR	95% CI
Intercept	-5.161***	1.115	21.443
Age	0.047*	0.021	5.133	1.049	1.006–1.092
Sex
Female	0.070	0.360	0.038	1.073	0.530–2.170
Male (ref.)
Education
Primary education	1.422*	0.567	6.281	4.145	1.363–12.605
Lower secondary education	1.145*	0.492	5.402	3.141	1.197–8.245
Upper secondary education (ref.)
Response link by SMS	B	SE	Wald	OR	95% CI
Intercept	-5.595	1.395	16.093
Age	0.038	0.026	2.171	1.039	0.987–1.093
Sex
Female	0.648	0.544	1.420	1.911	0.658–5.549
Male (ref.)
Education
Primary education	0.067	0.933	0.005	1.070	0.172–6.660
Lower secondary education	1.186*	0.596	3.957	3.273	1.018–10.528
Upper secondary education (ref.)
Model summary
−2 Log likelihood	261.744
Model χ²(8)	28.020***
Pseudo R²: Cox and Snell	0.077
Pseudo R²: Nagelkerke	0.114