Table 3 Factors Associated with Change in Children’s Nutrition Knowledge from May to October by Linear Mixed Models^a (n = 2196)

Intercept

[29.6, 35.5]

[29.2, 35.2]

25.9

[21.4, 30.4]

C

Sex

Girl (vs Boy)

[0.2, 2.0]*

[0.13, 1.9]*

0.77

[−0.20, 1.7]

C

Grade

6th Grader (vs 5th)

[1.7, 3.5]*

[1.6, 3.4]*

2.7

[1.7, 3.7]*

Nutrition education program: group

First group (vs Second)

[8.7, 10.5]*

[8.7, 10.6]*

9.8

[8.8, 10.8]*

C

NK level in May

[−0.52, −0.45]*

[− 0.54, − 0.46]*

−0.54

[− 0.58, − 0.50]*

C

Being careful about what you eat is beneficial for you.^c

Yes in May (vs No)

[1.0, 3.4]*

2.0

[0.68, 3.3]*

C

Being careful about what you eat earns you esteem from those around you.^c

Yes in May (vs No)

[−1.0, 1.0]

−0.14

[− 1.2, 0.95]

C

Being careful about what you eat places a burden on you.^c

Yes in May (vs No)

[−1.6, 0.5]

−0.45

[−1.6, 0.69]

C

You discuss meals, food, nutrition, etc. with your guardians.^c

Yes in May (vs No)

[−1.2, 0.6]

−0.42

[−1.5, 0.61]

G

Subjective SES

Poor (vs Average)

−0.63

[−1.7, 0.48]

Affluent (vs Average)

−1.4

[−2.9, 0.12]

G

Guardians’ NK level

in May

0.11

[0.07, 0.16]*

G

Change in Guardians’ NK level

May to October

0.06

[0.006, 0.11]*

G

Being careful about what you eat is beneficial for you.^c

Yes in May (vs No)

1.1

[−1.0, 3.3]

G

Being careful about what you eat earns you esteem from those around you.^c

Yes in May (vs No)

−0.31

[−1.3, 0.70]

G

Being careful about what you eat places a burden on you.^c

Yes in May (vs No)

0.33

[−0.70, 1.4]

G

You discuss meals, food, nutrition, etc. with your child.^c

Yes in May (vs No)

1.5

[0.43, 2.7]*

G

My current dietary habits are firmly fixed, so changing them is difficult.^d

Yes in May (vs No)

0.24

[−0.78, 1.3]

G

My dietary habits are healthy, so there’s no need to change them.^d

Yes in May (vs No)

0.56

[−0.71, 1.8]