Table 3. Multiple logistic regression models of factors related to perceived effectiveness of the NHIP.

Category (ref)	Perceived effectiveness of the health information portal
	Overall satisfaction (ref = low)		Intention to revisit (ref = low)		Intention to recommend to others (ref = low)
	OR	95% CI	OR	95% CI	OR	95% CI
Sex (male)		P = 0.363		P = 0.369		P = 0.089
Female	1.52	0.617–3.735	0.64	0.243–1.692	0.41	0.146–1.144
Age group (19–29)		P = 0.629		P = 0.044		P = 0.456
30–39	0.50	0.175–1.437	0.50	0.180–1.392	0.45	0.157–1.312
40–49	0.54	0.141–2.073	0.37	0.101–1.333	0.46	0.120–1.719
≥ 50	0.67	0.195–2.341	0.18	0.055–0.598	0.54	0.165–1.765
Education level (high school graduate only)		P = 0.701		P = 0.694		P = 0.031
University graduation or higher	0.83	0.311–2.193	0.82	0.312–2.171	3.04	1.107–8.357
Relevance of health information on the site		P = 0.004		P < 0.001		P < 0.001
	1.85	1.210–2.819	3.05	1.814–5.130	3.64	2.074–6.390
Usefulness of information in making health decisions		P < 0.001		P < 0.001		P < 0.001
	2.53	1.615–3.965	3.38	2.050–5.588	4.18	2.448–7.135
Comprehensiveness of information		P = 0.811		P = 0.550		P = 0.999
	1.05	0.705–1.563	0.88	0.586–1.328	1.00	0.657–1.523
Effective visualization of information		P = 0.585		P = 0.010		P = 0.016
	1.12	0.746–1.679	1.75	1.143–2.689	1.69	1.101–2.600

NHIP = National Health Information Portal, ref = reference level, OR = odds ratio, CI = confidence interval.