The a path linking knowledge to Motivation & Self-Efficacy was negligible and non-significant (β = −0.01, p = 0.83), whereas the b path linking Motivation & Self-Efficacy to risk-food intake was moderate and highly significant (β = −0.38, p < 0.001).
Familiarity with Nutri-Score increased monotonically across educational strata, from 30.5% in upper-secondary/vocational respondents to 33.3% in post-secondary non-tertiary, 38.7% in university, and 48.4% in postgraduate respondents, with a significant trend across ordered educational levels (Spearman ρ = 0.14, p = 0.012); the omnibus four-group χ 2 did not reach significance (χ 2 = 6.27, df = 3, p = 0.099), consistent with a graded rather than threshold effect.