Choosing healthier foods in recreational sports settings: a mixed methods investigation of the impact of nudging and an economic incentive

Table 4 Proportion (%) of purchases that were healthy in each period in the subsample according to purchaser and characteristics of the purchaser

	Pre-intervention	Signage	Signage + taste	Signage + taste + price	Post-intervention	P value for interaction with period	Overall mean for all periods	P value for main effect
Purchaser						NS		0.0068
Adult only	39.8	40.8	42.4	45.3	46.8		43.5^†
Child only	26.6	27.3	47.5	35.8	40.8		35.8^‡
Both present	30.6	35.4	40.3	46.8	35.6		39.0^‡
Weight status ^a						0.0014		0.0125
Non-overweight	32.6	44.7^†	46.1	40.5^†	45.9		42.1
Overweight	35.7	27.5^‡	35.6	50.8^‡	43.4		39.7
Sex ^a						0.0094		NS
Male	30.3	38.6	33.6^†	50.3^†	42.5		41.3
Female	35.3	37.5	50.6^‡	38.0^‡	46.0		41.3
Overall mean	33.7	37.9	43.9^*	43.3^*	44.9^*		41.3	0.0048

n = 1032 items purchased by adults alone, n = 400 by children alone, and n = 1080 by adults and children together; A chi-square analysis was used to test for main effects and interactions.
^aThe weight status and sex of the purchaser were recorded for transactions involving adults only and children only. They were not recorded when both adults and children were present during the transaction.
*Significantly different from pre-intervention, p < 0.05.
^†,‡Values within a column with different superscripts are significantly different for that effect, p < 0.05.

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