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Table 2 Effectiveness of nutrition education on primary and secondary outcomes (n = 226)

From: Effect of nutrition education intervention on nutrition knowledge, attitude, and diet quality among school-going adolescents: a quasi-experimental study

Variables

Characteristics

Intervention group (n = 113)

Control group(n = 113)

p-value†

Difference in difference (DID)

p-value‡

Mean (SD)

Mean (SD)

(95% CI)

Nutrition knowledge score

Baseline

6.59 (2.04)

6.50 (1.76)

0.72

1.80 (1.11 − 2.49)

< 0.001

Follow-up

8.69 (2.05)

6.81 (1.60)

< 0.001

Change

2.10 (0.55)

0.31 (0.54)

< 0.001

Nutrition attitude score

Emotional eating

Baseline

2.70 (1.43)

2.17 (1.41)

< 0.001

0.98 (0.42–1.54)

< 0.001

Follow-up

3.75 (1.74)

2.47 (1.44)

< 0.001

Change

1.05 (0.65)

0.30 (0.46)

< 0.001

Uncontrolled eating

Baseline

9.86 (3.87)

9.46 (3.80)

0.43

3.60 (2.10–5.09)

< 0.001

Follow-up

13.46 (4.64)

9.81 (3.68)

< 0.001

Change

3.59 (1.43)

0.34 (0.49)

< 0.001

Cognitive restrain

Baseline

2.91 (1.82)

3.34 (1.84)

0.07

2.26 (1.51–3.01)

< 0.001

Follow-up

5.17 (2.51)

3.67 (1.85)

< 0.001

Change

2.26 (1.18)

0.32 (0.47)

< 0.001

pro-Healthy Diet Index (pHDI)

Baseline

2.94 (1.75)

2.99 (1.47)

0.80

0.44 (-0.14-1.04)

0.14

Follow-up

3.37 (1.70)

3.03 (1.54)

0.11

Change

0.43 (0.37)

0.03 (0.22)

< 0.001

  1. †p-value significance level difference for independent t-test; ‡denotes for p-value of intervention effect size which was measured using DID estimates from a linear regression model