. 2017 Nov 8;19(11):e379. doi: 10.2196/jmir.7068

Table 3.

The effect of the demographic variables on outcomes (multivariable analysis).

Aspect group and website aspect		Variable, OR (95% CI)^a
		Age (per year increase)	Gender (male)	Migration (migrant background)	School type (intermediate tier)	School type (highest tier)
Who and for whom
	Reputable publisher (n=1074^b)	1.23 (1.03-1.47)^c	0.50 (0.37-0.69)^c	0.64 (0.50-0.81)^c	1.39 (0.70-2.73)	2.04 (1.03-4.03)^c
	Explicitly addressed at adolescents (n=1081^b)	1.16 (0.96-1.40)	0.48 (0.35-0.67)^c	0.76 (0.66-0.88)^c	1.08 (0.74-1.57)	1.02 (0.83-1.26)
Information presentation
	Language easily understandable (n=1081^b)	1.02 (0.91-1.13)	0.85 (0.51-1.39)	0.47 (0.29-0.75)^c	1.33 (0.70-2.53)	2.62 (1.36-5.06)^c
	Information clearly laid out (n=1074^b)	1.13 (1.01-1.27)^c	0.71 (0.48-1.06)	0.71 (0.48-1.04)	1.10 (0.42-2.86)	1.75 (0.85-3.59)
	Texts short and concise (n=1077^b)	1.32 (1.10-1.58)^c	1.02 (0.84-1.25)	1.46 (1.10-1.94)^c	0.71 (0.50-1.03)	0.81 (0.46-1.44)
	Visual style/design attractive (n=1069^b)	1.15 (1.00-1.32)^c	1.57 (1.08-2.29)^c	1.02 (0.78-1.32)	0.68 (0.52-0.90)^c	1.07 (0.70-1.52)
Website features
	Possibility to ask questions (n=1072^b)	1.00 (0.82-1.24)	0.87 (0.71-1.07)	0.89 (0.64-1.24)	1.06 (0.71-1.58)	1.14 (0.80-1.62)
	Section with personal experiences (n=1073^b)	1.17 (1.02-1.33)^c	0.84 (0.63-1.14)	0.88 (0.69-1.11)	0.87 (0.48-1.60)	1.17 (0.68-2.01)
	Advice from other adolescents (n=1065^b)	1.08 (0.06-8.62)	0.99 (0.76-1.23)	0.78 (0.59-1.04)	0.91 (0.61-1.37)	1.27 (0.92-1.75)

^aReference category for gender was female, migration was none, and for both school types was lowest tier.

^bNumber of participants included in the analysis.

^cP<.05.