. 2021 Oct 7;13(10):3518. doi: 10.3390/nu13103518

Table 3.

Results of the conditional logit model: Interaction effects.

Attribute—Claim Related to Ingredient
Level of attribute	Interaction effect	Coefficients	Exp (coef)	se (coef)	z-value
With natural ingredients ^a	:gender	0.216 *	1.240	0.106	2.021
With natural ingredients ^a	:education	0.262 *	1.299	0.135	1.931
Rich in vitamin C ^a	:gender	0.407 **	1.502	0.149	2.726
26 g protein per portion ^a	:education	0.262 *	1.299	0.135	1.931
Attribute—Organic
OrgSmoothie name + EU organic logo ^b	:General health interest	−0.128 *	0.88	0.068	−1.872
OrgSmoothie name + EU organic logo ^b	:involvement	0.214 **	1.239	0.069	3.090
Attribute—Health claim
Contains no added sugar ^c	:age	0.502 **	1.652	0.106	4.719
Protein contributes to the maintenance of normal bones ^c	:age	0.281 **	1.324	0.125	2.251
Attribute—Shape
round ^d	:General health interest	−0.131 *	0.877	0.078	−1.669
round ^d	:education	−0.229 **	0.795	0.078	−2.937
columnar ^d	:gender	0.239 **	1.27	0.12	1.996

^a—reference category: packaging with no claim on an ingredient; ^b—reference category—nonorganic product; ^c—reference category—packaging with no health claim; ^d—reference category—humanoid shape; * p < 0.1, ** p < 0.05;