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Table 3 Differences in the effects of messages with the Nutri-Score vs. without the Nutri-Score on the seven dependent variables, in relation with the nutritional quality of the products: analysis of variance and effect size (ηp2)

From: A randomized controlled trial to test the effects of displaying the Nutri-Score in food advertising on consumer perceptions and intentions to purchase and consume

 

Overall Score

Perceived product nutritional quality

Perceived healthiness of the product

Affective evaluation of the product

Intention to purchase the product

Intention to personally consume the product

Intention to give the product to a child

ηp2

ηp2

ηp2

ηp2

ηp2

ηp2

ηp2

F (df)

F (df)

F (df)

F (df)

F (df)

F (df)

F (df)

Source of effects:

 Messages with vs. without the Nutri-Score

.007

.017

.008

.001

.002

.003

.005

12.32 (1.1826)***

30.84 (1.1826)****

14.48 (1.1826)***

2.71 (1.1826)

3.84 (1.1826)*

4.95 (1.1826)*

9.10 (1.1826)**

 Nutritional quality

.276

.454

.386

.223

.05

.038

.09

696.96 (4.7304)****

1518.27 (4.7304)****

1148.39 (4.7304)****

523.15 (4.7304)****

96.95 (4.7304)****

72.43 (4.7304)****

179.65 (4.7304)****

 Messages with vs. without the Nutri-Score *Nutritional quality

.099

.168

.104

.074

.03

.02

.035

200.04 (4.7304)****

369.51 (4.7304)****

211.93 (4.7304)****

146.59 (4.7304)****

55.34 (4.7304)****

40.04 (4.7304)****

67.03 (4.7304)****

  1. ηp2 = Eta2; F = ANOVA F-value; (df) = degrees of freedom
  2. *p < 0.05
  3. **p < 0.01
  4. ***p < 0.001
  5. ****p < 0.000001