The Effect of Energy Labelling on Menus and a Social Marketing Campaign on Food-Purchasing Behaviours of University Students

Table 4 Intercept survey results of food outlet customers categorized according to intervention

Percentage of students (%)	Menu labelling (n = 318) (%)	Mean (SD) energy consumed (kJ)	Social marketing campaign (n = 264) (%)	Mean (SD) energy consumed (kJ)	Chi square^a	Significance^a
Aware of kJ intervention	30	3353 (732)	51	3811 (1272)^b	13.82	0.0015
Aware but not influenced by intervention	25	3392 (871)	42	3968 (1382)^c	9.25	0.0005
Aware and influenced by intervention	5	3313 (966)	9	2833 (1182)^{b, c}	5.99	0.0604

^aChi-squared tests for differences in proportions of awareness and influence of intervention
ANOVA with Bon-ferroni post-hoc test
^bReported mean kJ consumed between respondents who recalled campaign and used labels and respondents who did not recall campaign: p-value < 0.01, 99 % 978 kJ CI (129.7, 1721.6)
^cReported mean kJ consumed between respondents who recalled campaign elements but differed in reported label use p-value < 0.01, 99 % 1135 kJ CI (126.9, 1796.2)

ISSN: 1471-2458