Table 5.

Linear regression results.

		Unstandardized coefficient (SE)	t test	P value
HWIS a,b
	Age (years)	–0.01 (0.002)	–7.69	<.001
	Information quality	–0.04 (0.03)	–1.33	.18
	Trust in online health information	0.01 (0.03)	0.40	.69
	Trust in health care institutions	0.01 (0.02)	0.27	.78
	Search skills	0.01 (0.02)	0.62	.53
	Race	0.06 (0.02)	2.91	.004
	Ethnicity	–0.11 (0.09)	–1.29	.20
	Political affiliation	0.05 (0.05)	1.15	.25
	Constant	2.95 (0.21)	14.13	<.001
HGISc,d
	Age (years)	0.01 (0.002)	5.08	<.001
	Information quality	–0.04 (0.03)	–1.13	.26
	Trust in online health information	0.02 (0.03)	0.67	.51
	Trust in health care institutions	0.01 (0.02)	0.59	.56
	Search skills	–0.01 (0.02)	–0.64	.53
	Race	0.04 (0.02)	1.52	.13
	Ethnicity	0.03 (0.09)	0.32	.75
	Political affiliation	0.01 (0.05)	0.24	.81
	Constant	0.43 (0.22)	2.00	.045
HMISe,f
	Age (years)	0.004 (0.001)	2.96	.003
	Information quality	0.01 (0.03)	0.47	.64
	Trust in online health information	–0.06 (0.03)	–2.20	.03
	Trust in health care institutions	0.02 (0.02)	1.21	.23
	Search skills	–0.02 (0.02)	–0.99	.32
	Race	0.02 (0.02)	1.25	.21
	Ethnicity	0.08 (0.07)	1.11	.27
	Political affiliation	–0.01 (0.04)	–0.26	.79
	Constant	0.56 (0.17)	3.25	.001
PHAg,h
	Age (years)	–0.001 (0.002)	–0.71	.48
	Information quality	–0.004 (0.04)	–0.10	.92
	Trust in online health information	–0.04 (0.04)	–1.24	.22
	Trust in health care institutions	–0.02 (0.02)	–0.78	.44
	Search skill	–0.04 (0.02)	–1.69	.09
	Race	0.02 (0.03)	0.77	.44
	Ethnicity	0.09 (0.10)	0.95	.35
	Political affiliation	–0.07 (0.05)	–1.27	.21
	Constant	2.24 (0.24)	9.37	<.001

^aHWIS: health wellness information search.

^bModel summary: R²=0.07; F_8,1128=11.34; P<.001.

^cHGIS: health guidance information search.

^dModel summary: R²=0.03; F_8,1128=4.00; P<.001.

^eHMIS: health management information search.

^fModel summary: R²=0.02; F_8,1128=2.75; P=.005.

^gPHA: preventative health actions.

^hModel summary: R²=0.02; F_8,1128=3.01; P=.002.