Table 2.

Adjusted cumulative odds ratios of proportional odds logistic regression analysis for the association between parental Internet use to search for information on immunizations and parental perception on safety of childhood immunizations.

Variables			Online survey (n=966) OR (95% CI)	Population-based RDDa survey (n=951) OR (95% CI)
Predictor of interest
	Use of the Internet		1.61 (1.25-2.09)	1.99 (1.55-2.54)
	Did not use the Internet		1.00 Reference	1.00 Reference
Confounders
	Income level (Can$)
		<$30,000	1.42 (0.91-2.21)	1.60 (1.03-2.48)
		$30,000 to $59,999	1.67 (1.20-2.33)	1.19 (0.86-1.63)
		$60,000 to $99,999	1.23 (0.94-1.62)	1.10 (0.82-1.47)
		≥$100,000	1.00 Reference	1.00 Reference
	Perceived Internet reliability
		Most reliable	4.77 (2.88-7.91)	2.18 (1.41-3.36)
		Second most reliable	3.96 (2.58-6.07)	1.12 (0.81-1.57)
		Third most reliable	1.12 (0.78-1.62)	1.66 (0.61-4.50)
		Not in top three choices	1.00 Reference	1.00 Reference
	Age of parent (continuous)		0.98 (0.96-0.99)	—
	Age of parent (categorical)
		<30	—	1.71 (0.98-2.98)
		30-34	—	0.99 (0.68-1.45)
		35-39	—	1.20 (0.87-1.67)
		40-44	—	1.16 (0.86-1.57)
		≥45	—	1.0 Reference
	Region of residence
		British Colombia	0.93 (0.65-1.33)	1.63 (1.04-2.57)
		Alberta	0.77 (0.56-1.06)	1.38 (0.89-2.15)
		Saskatchewan and Manitoba	0.64 (0.43-0.95)	1.71 (1.13-2.59)
		Ontario	1.00 Reference	1.00 Reference
		Québec	1.89 (1.27-2.83)	1.26 (0.89-1.78)
		Atlantic/Territories	1.00 (0.63-1.60)	1.08 (0.75-1.56)

^aRDD: random digit dialing.