Table 1.

Fit measures for factor models assessing food choice motives, attitude towards personalised nutrition (PN) and intention to adopt PN among nationally representative samples recruited in nine EU countries^† (n 9381), 2013

						RMSEA
Factor model	Metric invariance	Scalar invariance	SB χ 2	CFI	TLI	Value	90 % LB	90 % UB	SRMR
Food choice motives	Partial‡	Partial‡	9172·111	0·96	0·95	0·037	0·036	0·038	0·046
Attitude towards PN	Yes	Partial§	505·23	0·92	0·93	0·097	0·091	0·104	0·067
Intention to adopt PN	Partial║	Partial║	200·94	0·97	0·96	0·090	0·079	0·100	0·070

SB χ ², Satorra–Bentler corrected χ ²; CFI, comparative fit index; TLI, Tucker–Lewis index; RMSEA, root-mean-square error of approximation; LB, lower bound; UB, upper bound; SRMR, standardised root-mean-square residual.

^†Countries: Germany (GER), Greece (GRE), Ireland (IRE), Poland (POL), Portugal (POR), Spain (ES), the Netherlands (NL), the United Kingdom (UK) and Norway (NOR).

^‡Health: equality of item loading relaxed for 4th item in POL; equality of item intercepts relaxed for 1st item in GER, for 2nd item in ES, POL, UK and NL, for 3rd item in POL and POR, for 4th item in GER and NL, for 5th item in NOR and NL, and for 6th item in ES. Mood: equality of item loading relaxed for 4th item in POL; equality of item intercepts relaxed for 2nd item in ES and GRE, for 4th item in NOR, GER, ES, GRE, POL and POR, for 5th item in NOR, GER, GRE and POL, and for 6th item in NOR and GER. Convenience: equality of item intercepts relaxed for 2nd item in GRE, for 3rd item in NOR, GER, POL, UK and IRE, for 4th item in NOR, GER, ES, GRE, POL, NL and POR, and for 5th item in NOR, GRE, POL, NL and POR. Sensory appeal: equality of item loading relaxed for 4th item in ES; equality of item intercepts relaxed for 1st item in GRE and UK, for 2nd item in ES, NL and POR, for 3rd item in POR, and for 4th item in ES. Natural content: equality of item intercepts relaxed for 1st item in NOR and for 2nd item in GRE and POL. Price: equality of item loadings relaxed for 1st item in NOR and for 2nd item in ES; equality of item intercepts relaxed for 1st item in NOR, for 2nd item in NOR, ES, UK and IRE, and for 3rd item in GER. Weight control: equality of item loading relaxed for 1st item in NOR; equality of item intercepts relaxed for 1st item in NOR and GER, for 2nd item in NL, and for 3rd item in ES and POR. Familiarity: equality of item loading relaxed for 2nd item in GRE; equality of item intercepts relaxed for 1st item in NOR, GER, GRE, UK and IRE, for 2nd item in NOR, GRE and POR, and for 3rd item in POL and NL. Ethical concern: equality of item intercepts relaxed for 1st item in ES, GRE and UK, for 2nd item in UK, NL and POR, and for 3rd item in POL.

^§Equality of item intercept relaxed for 3rd item in NL.

^║Equality of item loading (and intercept) relaxed for 2nd item in ES; equality of item intercepts relaxed for 1st item in GRE, for 2nd item in NOR, GER and NL, and for 3rd item in GER.