Web survey entry options
	Typing the URL	Typing the URL	Response link by email	Response link by email	Response link by SMS	Response link by SMS	Total	Total
	n	%	n	%	n	%	n	%
Sex (Χ² = 1.444, d.f. = 2, p = 0.486)
Female	186	82.3	25	11.1	15	6.6	226	100
Male	109	83.2	17	13.0	5	3.8	131	100
Age (Χ² = 12.4, d.f. = 4, p < 0.05)
20–44 years old	137	89.0	10	6.5	7	4.5	154	100
45–54 years old	94	81.0	14	12.1	8	6.9	116	100
55–70 years old	62	72.9	18	21.2	5	5.9	85	100
Education (Χ² = 20.653, d.f. = 4, p < 0.001)
Primary education	38	70.4	14	25.9	2	3.7	54	100
Lower secondary education	138	80.7	20	11.7	13	7.6	171	100
Upper secondary education	118	92.2	6	4.7	4	3.1	128	100