Table 3.

Characteristics of the intervention group and univariate and multivariate odds ratios and 95% confidence intervals of individual characteristics, behaviors, social cognitive variables, and health indicators for visiting the website in the second period in the intervention group (n = 378)

			Univariate Analysis		Multivariate Analysis
			OR	95% CI	OR	95% CI
Demographics
	Female gender		1.32	0.77-2.27	1.35	0.78-2.33
	Age (years)
		<30	1.00		1.00
		30-39	0.97	0.39-2.39	1.02	0.41-2.54
		40-49	1.26	0.54-2.97	1.47	0.62-3.52
		50+	1.14	0.49-2.69	1.37	0.57-3.28
	Education level
		Low	0.57	0.24-1.36
		Intermediate	1.04	0.59-1.84
		High	1.00
	Dutch ethnicity		1.05	0.50-2.20
	Married/cohabiting		1.01	0.54-1.87
	Behavior
		Insufficient moderate physical activity	1.06	0.60-1.87
		Insufficient vigorous physical activity	0.86	0.49-1.51
		Insufficient fruit or vegetable intake	1.45a	0.85-2.46
		Smoking	0.46a	0.19-1.13
		Excessive alcohol consumption	0.41	0.05-3.24
Social cognitive variables
	Physical activity
		Positive attitude	0.57b	0.33-0.97	0.54b	0.31-0.93
		High social support	0.80	0.36-1.78
		High self-efficacy	0.83	0.45-1.51
		Intention to increase physical activity	1.11	0.65-1.89
	Fruit and vegetable intake
		Positive attitude	0.55b	0.32-0.96
		High social support	0.42a	0.14-1.20
		High self-efficacy	1.07	0.51-2.25
		Intention to increase intake	0.89	0.44-1.80
	Health indicators
		Overweight/obese	1.27	0.75-2.17
		Poor/moderate general health	0.99	0.28-3.54
		Lowest quartile mental health	0.65a	0.34-1.24
		Lowest quartile physical health	1.01	0.55-1.89
		Elevated blood pressure	0.75	0.41-1.38
		Elevated total cholesterol level	0.89	0.52-1.52
		Poor predicted maximum oxygen uptake	0.56	0.21-1.47

^a P < .20, considered for inclusion in the multivariate logistic regression analysis

^b P < .05