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Table 2 Standardized Coefficients Obtained From Multiple Regression Analyses Predicting QOL Scores from Health Literacy Levels and Characteristics without and with Controlling for Covariate

From: The association between quality of life(QOL) and health literacy among junior middle school students: a cross-sectional study

Independent Variable(s)

Unadjusted Modela(N = 1774)

Fully adjusted Modelb(N = 1774)

b(SE)

P-Value

b(SE)

P-Value

Health literacy levels

 low

−12.7 (1.1)

< 0.0001

−9.3 (1.1)

< 0.0001

 Medium

−6.8 (1.0)

< 0.0001

−5.0 (0.9)

< 0.0001

 high

Ref.

 

Ref.

 

Sex

 Male

Ref.

 

Ref.

 

 Female

−3.5 (0.8)

< 0.0001

−4.5 (0.7)

< 0.0001

Grade

 7th

Ref.

 

Ref.

 

 8th

1.3 (1.0)

0.1845

1.6 (0.9)

0.0766

 9th

−3.0 (1.0)

0.0035

−1.8 (0.9)

0.0494

Place of residence

 Rural

Ref.

 

Ref.

 

 Urban

2.8 (0.8)

0.0007

1.8 (0.9)

0.0494

Only child

 Yes

Ref.

 

Ref.

 

 No

0.6 (0.8)

0.4630

−0.1 (0.8)

0.9349

Father’s education level

 Low

Ref.

 

Ref.

 

 Medium

2.8 (0.9)

0.0037

0.7 (0.9)

0.4498

 High

4.2 (1.4)

0.0027

−0.4 (1.5)

0.8149

Mother’s education level

 Low

Ref.

 

Ref.

 

 Medium

4.1 (0.9)

< 0.0001

2.2 (0.9)

0.0184

 High

4.2 (1.5)

0.0069

2.2 (1.6)

0.1868

Economic status

 Poor

Ref.

 

Ref.

 

 Medium

8.6 (1.2)

< 0.0001

4.2 (1.1)

< 0.0001

 Good

12.5 (1.5)

< 0.0001

6.0 (1.4)

0.0001

Family relationship

 Poor

Ref.

 

Ref.

 

 Neutral l

10.8 (1.9)

< 0.0001

9.9 (1.8)

< 0.0001

 Harmonious

21.7 (1.8)

< 0.0001

18.8 (1.8)

< 0.0001

Perception of school achievement

 Bad

Ref.

 

Ref.

 

 Medium

6.2 (1.0)

< 0.0001

4.0 (0.9)

< 0.0001

 Fair

7.5 (1.0)

< 0.0001

4.2 (0.9)

< 0.0001

  1. a Unadjusted model: multiple linear regression models with QOL scores as the dependent variable, health literacy levels as the independent variable, adjusting for no characteristic
  2. b Fully adjusted model: adjusting for all covariates, including sex, grade, place of residence, whether an only child, parents’ education level, household income, family relationship, student’s perception of school achievement, and health literacy levels