Capturing health and eating status through a nutritional perception screening questionnaire (NPSQ9) in a randomised internet-based personalised nutrition intervention: the Food4Me study

Table 4 Linear trend prediction through follow-up (0, 3 and 6 months) for changes by NPSQ9 tertiles of randomised volunteers

	Tertile 1 (Low)	Tertile 2 (Medium)	Tertile 3 (High)	ρ ^†	ρ ^‡
Score	7–19	20–23	24–30	–	–
n (women)	443 (258)	402 (237)	308 (174)	0.799^§	–
BMI (kg/m²)	−0.16 ± 0.02^***	−0.15 ± 0.02^***	−0.12 ± 0.02^***	0.934	0.340
Waist circumference (m)	−0.004 ± 0.001^***	−0.007 ± 0.001^***	−0.006 ± 0.001^***	0.024	0.197
Glucose (mmol/L)	−0.10 ± 0.02^***	−0.16 ± 0.02^***	−0.12 ± 0.02^***	0.046	0.472
Total colesterol (mmol/L)	−0.08 ± 0.02^***	−0.09 ± 0.02^***	−0.05 ± 0.02^*	0.658	0.351
Total carotenoids (μmol/L)	−0.01 ± 0.01	−0.02 ± 0.01^*	−0.05 ± 0.02^**	0.257	0.030
Omega3 index (AU)	0.09 ± 0.02^***	0.12 ± 0.02^***	0.10 ± 0.03^***	0.289	0.713
HEI score (AU)	1.75 ± 0.18^***	1.13 ± 0.16^***	1.05 ± 0.19^***	0.012	0.008
MDS (AU)	0.21 ± 0.03^***	0.15 ± 0.03^***	0.12 ± 0.04^**	0.201	0.070
MAR (%)	−1.84 ± 0.18^***	−1.10 ± 0.16^***	−1.12 ± 0.18^***	0.003	0.006

BMI Body Mass Index, AU Arbitrary Units, HEI Healthy Eating Index, MDS Mediterranean Diet Score, MAR Mean Adequacy Ratio. p-values for linear trend represented by ^* for p-value <0.05; ^** for p-value < 0.01; ^*** for p-value < 0.001
^† p-value for contrast of linear trend between Tertile1 and Tertile2; ^‡ p-value for contrast of linear trend between Tertile1 and Tertile3; ^§ p-value for Chi-square test of distribution

ISSN: 1479-5868