Table 3.

Hierarchical regression model of acceptance (the extended Unified Theory of Acceptance and Use of Technology model; N=307).

Predictor								βa						βb						T			R ²c				ΔR²d			P value
Step 1: sociodemographic variables																								0.041				0.041			—e
		Age (years)						–.01						–.11						–2.75			—				—			.006
		Occupational status
							Employed	–.11						–.13						–1.10			—				—			.27
							Unemployed	–.14						–.15						–1.15			—				—			.25
							Other	.00						.00						0.09			—				—			.98
		Place of residence
					Medium-sized city					–.26						–.30			–3.12			—				—				.002
					Small town			–.28					–.31						–2.91			—				—				.004
					Rural municipality			–.12					–.13						–1.35			—				—				.18
Step 2f: psychometric and medical variables																								0.069				0.028			.001
		PHQ-8g						.01						.04						1.08			—				—			.28
		Pain duration (months)
						6 to 12					–.02						–.03		–0.11			—				—				.92
						12 to 24					–.37						–.41		–1.81			—				—				.07
						>24					–.18						–.20		–1.04			—				—				.30
		Number of treatments tried
						>6			.05						.06				0.58		—				—				.57
						<3		–.13					–.15						–1.64			—				—				.10
Step 3f: eHealth-related factors																								0.130				0.061			<.001
	Private daily internet use (hours)
				1 to 2						–.17						–.19			–1.51			—				—				.13
				2 to 3				–.25					–.28						–2.27			—				—				.02
				3 to 4				–.17					–.19						–1.33			—				—				.19
				>4				–.29					–.33						–2.27			—				—				.02
	Confidence in dealing with eHealth
				A little unconfident								–.23						–.26		–0.96			—				—			.34
				Neutral								.28						.31		1.35			—				—			.18
				Rather confident								.20						.23		1.05			—				—			.29
				Very confident								.08						.09		0.42			—				—			.68
				Internet anxiety								–.03						–.03		–0.66			—				—			.51
				eHealth knowledge								.03						.03		0.83			—				—			.41
				No eHealth experience								.07						.08		0.92			—				—			.36
				eHEALSh								.00						.02		0.39			—				—			.70
Step 4f: UTAUTi core predictors																								0.664				0.534			<.001
	Effort expectancy									.37						.33			6.74			—				—				<.001
	Performance expectancy							.33						.31						6.30			—				—			<.001
	Social influence							.34						.29						6.46			—				—			<.001

^aStandardized coefficient beta.

^bUnstandardized coefficient beta.

^cDetermination coefficient.

^dChanges in R^².

^eNot available.

^fIn steps 2, 3, and 4, only the newly included variables are presented.

^gPHQ-8: Patient Health Questionnaire depression scale.

^heHEALS: eHealth literacy scale.

ⁱUTAUT: Unified Theory of Acceptance and Use of Technology.