Table 2.

Multivariable associations of health-related Internet use with sociodemographic, health characteristics, and health-risk behavior.

		Ever use of Internet	Internet use for health-related information last yearc	Internet first source for health-related informationc	Internet use for behavioral support last yearc
Sociodemographic & health characteristics a , OR (95% CI)
	Age	0.94 (0.92-0.95)d	0.99 (0.98-1.00)	1.00 (0.99-1.00)	0.97 (0.96-0.98)d
	Male	0.65 (0.47-0.89)d	0.64 (0.45-0.90)d	1.11 (0.56-1.44)	0.69 (0.50-0.93)d
	White	2.15 (1.44-3.20)d	0.92 (0.57-1.49)	0.90 (0.56-1.47)	0.71 (0.46-1.10)
	Married	1.69 (1.25-2.28)d	1.06 (0.78-1.44)	0.95 (0.77-1.17)	0.99 (0.74-1.34)
	Employed	1.40 (0.89-2.21)	1.11 (0.77-1.60)	1.19 (0.90-1.56)	1.00 (0.69-1.45)
	College education	7.40 (5.47-10.0)d	2.17 (1.40-3.36)d	1.42 (0.97-2.08)	1.41 (1.01-1.98)d
	Poor health	0.79 (0.51-1.22)	1.77 (1.03-3.05)d	1.40 (0.83-2.37)	1.43 (0.93-2.21)
	BMI	0.99 (0.95-1.02)	1.00 (0.97-1.03)	1.00 (0.98-1.02)	1.03 (1.00-1.05)d
Health-risk behavior b , OR (95% CI)
	Excessive alcohol use	0.61 (0.34-1.08)	0.86 (0.54-1.36)	0.83 (0.53-1.31)	0.86 (0.59-1.24)
	Current smoking	0.62 (0.38-1.02)	0.78 (0.47-1.29)	0.97 (0.67-1.39)	1.90 (1.35-2.68)d
	Low fruit/vegetable intake	1.03 (0.70-1.52)	0.60 (0.45-0.80)d	1.32 (1.04-1.68)d	0.97 (0.69-1.36)
	Inactive/ sedentary lifestyle	0.80 (0.36-1.75)	0.62 (0.37-1.05)	1.22 (0.80-1.87)	0.94 (0.53-1.68)
	Unprotected sun exposure	0.59 (0.40-0.88)d	0.94 (0.66-1.35)	0.97 (0.75-1.26)	1.01 (0.67-1.53)
	Obese	0.91 (0.60-1.38)	1.03 (0.72-1.49)	0.91 (0.67-1.24)	1.32 (1.00-1.75)

^aEstimates from model including all sociodemographic & health characteristics but no health-risk behaviors. ^bEstimates in separate models for each health-risk behavior, including sociodemographic & health characteristics covariates (BMI omitted from models with “Obese” as health-risk behavior).

^cRestricted to those who have ever used the Internet.

^d P<.05.