Ranking of meal preferences and interactions with demographic characteristics: a discrete choice experiment in young adults

Table 2 Stated preference weights for attributes of a typical weekday meal in young Australian adults (18–30 years) in the CHOICE Study (n = 92)

Attribute	Attribute level	Including the opt-out option				Excluding the opt-out option
Attribute	Attribute level	Coefficient	(95% CI)	P value	RIS	Coefficient	(95% CI)	P value	RIS
Nutrition content	Low (reference)
	Adequate	0.77	(0.50, 1.04)	< 0.001	1	0.63	(0.37, 0.88)	< 0.001	1
	Optimal	1.26	(0.94, 1.59)	< 0.001		1.11	(0.81, 1.41)	< 0.001
Cost	$5 per person (reference)
	$10 per person	− 0.17	(− 0.36, 0.02)	0.083	2	− 0.16	(− 0.35, 0.03)	0.09	2
	$15 per person	− 0.57	(−0.85, − 0.30)	< 0.001		− 0.50	(− 0.75, − 0.24)	< 0.001
Taste	Sufficient (reference)
	Good	0.26	(0.05, 0.47)	0.017	3	0.20	(− 0.01, 0.42)	0.06	3
	Very good	0.45	(0.18, 0.72)	0.001		0.38	(0.12, 0.63)	0.004
Familiarity	Not very (reference)
	Somewhat	0.18	(0.02, 0.35)	0.026	4	0.13	(− 0.02, 0.28)	0.09	4
	Very	0.39	(0.21, 0.57)	< 0.001		0.37	(0.21, 0.54)	< 0.001
Time	5 min (reference)
	15 min	− 0.04	(− 0.20, 0.13)	0.64	5	− 0.06	(− 0.22, 0.10)	0.45	5
	30 min	− 0.37	(− 0.60, − 0.14)	0.002		− 0.33	(− 0.53, − 0.12)	0.002

Data are dummy coded conditional logit model coefficients and 95% CI. Preference weights indicates utilities for a given attribute level. The RIS is based on the ranking of coefficient absolute values. RIS, Relative Importance Score

ISSN: 1479-5868