Table 2.

The FFD study. Test‐retest reliability of the 10 subscales that constitute the FFD dietary score and for the trichotomised score

The 10 subscales related to the corresponding FFD dietary recommendations	Spearman's rank order correlation	P‐value	Kappa measure of agreement (dichotomised subscales)	Percent agreement between test and retest (dichotomised subscales)
Meal frequency (n = 103)	0.84	≤0.001	0.71	85
Choosing water when thirsty (n = 98)	0.70	≤0.001	0.55	78
Vegetables for dinner (n = 103)	0.76	≤0.001	0.45	73
Fruits and vegetables as in‐between‐meal snack (n = 92)	0.56	≤0.001	0.39	70
Eating sweets and snacks without appreciation (n = 100)	0.68	≤0.001	0.63	82
Portion size of sweets and snacks (n = 93)	0.77	≤0.001	0.74	87
Frequency of eating foods and drinks with added sugar (n = 100)	0.78	≤0.001	0.62	81
Frequency of eating foods and snacks with added salt (n = 99)	0.77	≤0.001	0.61	81
Frequency of overeating (n = 102)	0.81	≤0.001	0.65	83
Frequency of reading food labels before buying (n = 101)	0.73	≤0.001	0.58	82
FFD dietary score (n = 106)	0.68*	≤0.001	0.51 †	68 †

FFD, fit for delivery. *Pearson correlation coefficient is used for the FFD score. ^†Trichotomised score.