Table 3

Effect of different FOPL schemes on correct identification of the least harmful option, understanding of the nutritional content and intention to purchase products, in Jamaica, compared with the control condition.* Values are ORs (95% CIs)

Outcomes	Products	Front-of-package labelling experimental groups
Outcomes	Products	TFL (n=301)	MGG (n=301)	OWL (n=303)
Correct identification of the least harmful option	All categories of products	1.13 (0.85 to 1.51)^a	1.18 (0.89 to 1.57)^a	2.07 (1.54 to 2.78)†^b
	Breakfast cereals	1.16 (0.83 to 1.61)^a	1.83 (1.30 to 2.60)†^b	1.97 (1.39 to 2.82)†^b
	Crackers	1.02 (0.74 to 1.41)^a	1.18 (0.85 to 1.63)^a	1.75 (1.26 to 2.44)†^b
	Yoghurts	1.20 (0.86 to 1.68)^a	0.69 (0.50 to 0.96)^b	1.42 (1.01 to 2.00)†^a
	Flavoured milks	0.99 (0.71 to 1.38)^a	1.11 (0.80 to 1.55)^a,b	1.41 (1.00 to 1.98)^b
Correct understanding about the nutritional content of products	All categories of products	2.09 (1.57 to 2.79)†^a	2.69 (2.01 to 3.62)†^a	4.57 (3.41 to 6.15)†^b
	Breakfast cereals	1.91 (1.33 to 2.76)†^a	2.49 (1.74 to 3.58)†^a	4.14 (2.90 to 5.96)†^b
	Crackers	1.81 (1.27 to 2.58)†^a	2.38 (1.68 to 3.38)†^a	3.68 (2.60 to 5.25)†^b
	Yoghurts	2.01 (1.43 to 2.83)†^a	2.15 (1.53 to 3.04)†^a	3.41 (2.43 to 4.83)†^b
	Flavoured milks	5.52 (3.44 to 9.15)†^a	7.99 (5.02 to 13.20)†^a,b	9.04 (5.69 to 14.91)†^b
Intention to purchase the least harmful option or none of the options	All categories of products	1.25 (0.93 to 1.67)^a	1.58 (1.18 to 2.11)†^a,b	2.03 (1.51 to 2.72)†^b
	Breakfast cereals	1.14 (0.82 to 1.59)^a	1.61 (1.15 to 2.26)†^b	1.61 (1.15 to 2.26)†^b
	Crackers	1.44 (1.03 to 2.04)†^a,b	1.28 (0.91 to 1.80)^a	1.79 (1.27 to 2.52)†^b
	Yoghurts	0.99 (0.72 to 1.37)	1.18 (0.85 to 1.63)	1.33 (0.96 to 1.85)
	Flavoured milks	1.06 (0.77 to 1.47)^a	1.36 (0.98 to 1.88)^a,b	1.62 (1.17 to 2.25)†^b
Intention to purchase the least harmful option	All categories of products	1.16 (0.81 to 1.66)^a	1.50 (1.04 to 2.16)†^a,b	1.80 (1.24 to 2.63)†^b
	Breakfast cereals	1.18 (0.84 to 1.66)	1.65 (1.16 to 2.34)†	1.54 (1.09 to 2.19)†
	Crackers	1.47 (1.02 to 2.11)†	1.16 (0.80 to 1.69)	1.56 (1.08 to 2.25)†
	Yoghurts	0.99 (0.69 to 1.41)	1.19 (0.83 to 1.70)	1.26 (0.88 to 1.81)
	Flavoured milks	1.08 (0.72 to 1.62)	1.23 (0.82 to 1.87)	1.36 (0.90 to 2.05)
Intention to not purchase any of the options	All categories of products	1.07 (0.76 to 1.49)^a	1.23 (0.88 to 1.73)^a	1.77 (1.27 to 2.47)†^b
	Breakfast cereals	0.94 (0.51 to 1.71)^a	1.09 (0.61 to 1.96)^a,b	1.84 (1.07 to 3.23)†^b
	Crackers	1.18 (0.57 to 2.46)^a	1.77 (0.92 to 3.54)^a,b	2.78 (1.49 to 5.44)†^b
	Yoghurts	0.98 (0.62 to 1.56)	1.09 (0.70 to 1.72)	1.34 (0.86 to 2.09)
	Flavoured milks	1.02 (0.69 to 1.52)^a	1.37 (0.94 to 2.00)^a,b	1.75 (1.20 to 2.56)†^b

Different superscript letters within a row in the comparison between columns indicate significant differences between the effects of FOPL schemes (p≤0.05).
*Estimates for sets of products were obtained using ordered logistic regression models and estimates for single categories of products were obtained using logistic regression models with link function binomial logit. All estimates were adjusted for age, gender, education and reported non-communicable disease and related risk factors.
†Significantly different from control condition. Also highlighted in bold (p≤0.05).
FOPL, front-of-package labelling ; MGG, magnifying glass high-in single icon; OWL, octagonal warning labels; TFL, traffic-light labelling.