Table 4.

Factors related to low health literacy risk.

	Logistic regression model
Items	P value	OR	95%CI
			Lower	Higher
Univariate logistic regression
Age
16–35 yr	Reference	–	–	–
36–55 yr	<.001	1.395	1.241	1.569
56–75 yr	<.001	2.168	1.907	2.464
Gender
Female	Reference	–	–	–
Male	<.001	1.384	1.251	1.531
Education level
University or above	Reference	–	–	–
High school	.005	1.251	1.069	1.465
Junior high school	<.001	2.186	1.881	2.540
Primary school or below	<.001	4.499	3.751	5.397
Annual household income
≥¥50000	Reference	–	–	–
¥30,000–¥49,999	.093	1.129	0.980	1.301
¥10,000–¥29,999	<.001	2.370	2.072	2.712
<¥10000	<.001	4.527	3.441	5.956
Location
Urban	Reference	–	–	–
Rural	<.001	2.197	1.978	2.440
Forward stepwise multivariate logistic regression
Age
16–35 yr	Reference	–	–	–
36–55 yr	<.001	1.442	1.279	1.625
56–75 yr	<.001	2.373	2.082	2.706
Annual household income
≥¥50,000	Reference	–	–	–
¥30,000–¥49,999	.089	1.132	0.981	1.307
¥10,000–¥29,999	<.001	2.066	1.722	2.480
<¥10,000	<.001	4.768	3.458	6.574
Location
Urban	Reference	–	–	–
Rural	.043	1.187	1.005	1.402