Table 2.

Classification agreement and misclassification of food consumption frequency in the test and the retest by age groups (%).

Food Items 1	Total Sample (n = 97)				13–15 Years (n = 31)				16–18 Years (n = 38)				19–21 Years (n = 28)
	Compatible	Non-Compatible		k	Compatible	Non-Compatible		k	Compatible	Non-Compatible		k	Compatible	Non-Compatible		k
		±1	±2 or More			±1	±2 or More			±1	±2 or More			±1	±2 or More
Venison	89	10	1	0.56	90	6	3	0.58	82	18	0	0.50	96	4	0	0.78
Other animal fats	88	10	2	0.64	87	10	3	0.54	84	13	3	0.53	93	7	0	0.85
Olives	87	11	2	0.70	84	10	6	0.65	84	16	0	0.71	93	7	0	0.86
Spirits	86	10	4	0.72	90	3	6	0.66	76	18	5	0.63	93	7	0	0.89
Avocado	84	15	1	0.54	81	16	3	0.42	82	18	0	0.61	89	11	0	0.52
Wine and cocktails	84	12	4	0.71	87	6	6	0.50	76	18	5	0.66	89	11	0	0.84
Beer	80	18	2	0.70	81	13	6	0.62	74	26	0	0.64	89	11	0	0.83
All kinds of fruits	74	22	4	0.61	74	19	6	0.63	66	32	3	0.52	86	11	4	0.79
Energy drinks	74	19	7	0.63	65	26	10	0.51	76	16	8	0.68	82	14	4	0.74
Eggs and egg dishes	73	24	3	0.56	65	32	3	0.48	74	24	3	0.59	82	14	4	0.64
Tomatoes	73	18	9	0.62	74	16	10	0.63	61	24	16	0.49	89	11	0	0.85
Chocolates	72	23	5	0.60	65	23	13	0.48	71	26	3	0.60	82	18	0	0.76
Kiwi and citrus fruit	72	23	5	0.59	68	23	10	0.56	66	29	5	0.53	86	14	0	0.77
Dried fruit	72	23	5	0.57	55	32	13	0.37	79	18	3	0.67	82	18	0	0.73
Cruciferous vegetables	72	24	4	0.55	61	29	10	0.41	74	26	0	0.60	82	14	4	0.70
Poultry and rabbit	72	25	3	0.59	58	39	3	0.44	74	24	3	0.62	86	11	4	0.79
Sugar confectionery	71	26	3	0.58	74	19	6	0.60	66	32	3	0.53	75	25	0	0.67
Savory snacks	71	26	3	0.58	68	29	3	0.55	68	29	3	0.57	79	18	4	0.67
Leafy green vegetables	71	24	5	0.60	58	35	6	0.43	71	21	8	0.60	86	14	0	0.81
Lean fish	71	23	6	0.57	61	26	13	0.46	74	24	3	0.63	79	18	4	0.67
Bananas	70	26	4	0.54	65	29	6	0.49	71	26	3	0.56	75	21	4	0.62
Fresh and tinned legumes	70	22	8	0.54	55	29	16	0.37	71	24	5	0.56	86	11	4	0.76
High quality cured meats	70	27	3	0.56	61	32	6	0.46	74	24	3	0.61	75	25	0	0.65
Honey	69	25	6	0.53	65	23	13	0.39	71	26	3	0.59	71	25	4	0.60
Mayonnaise	69	27	4	0.56	68	29	3	0.54	66	26	8	0.53	75	25	0	0.64
Fine groats	68	23	9	0.46	65	16	19	0.42	74	21	5	0.58	64	32	4	0.38
Apples and pears	68	26	6	0.51	58	39	3	0.34	68	21	11	0.56	79	18	4	0.66
Sugar	67	27	6	0.54	55	29	16	0.39	71	26	3	0.61	75	25	0	0.63
Baked confectionery	67	26	7	0.50	68	19	13	0.46	63	29	8	0.47	71	29	0	0.59
Cheese	67	25	8	0.53	58	29	13	0.44	71	18	11	0.59	71	29	0	0.58
Coarse groats	67	24	9	0.47	52	35	13	0.29	71	18	11	0.51	79	18	4	0.64
Butter	67	23	10	0.53	61	23	16	0.36	68	21	11	0.57	71	25	4	0.63
Yellow-orange vegetables	67	25	8	0.49	52	29	19	0.30	74	21	5	0.61	75	25	0	0.60
Nuts and nut spreads	66	28	6	0.50	65	23	13	0.48	58	37	5	0.40	79	21	0	0.66
Red meat	66	26	8	0.51	58	39	3	0.40	63	24	13	0.48	79	14	7	0.68
Oily fish	66	33	1	0.48	61	39	0	0.45	68	32	0	0.51	68	29	4	0.51
All kinds of vegetables (potatoes not included)	65	28	7	0.47	52	35	13	0.34	61	34	5	0.42	86	11	4	0.76
Potatoes	65	32	3	0.46	52	45	3	0.23	66	29	5	0.47	79	21	0	0.69
Sausages, bacon, reconstituted meat	65	26	9	0.54	58	26	16	0.45	66	26	8	0.56	71	25	4	0.64
Vegetable-based oil	64	32	4	0.48	48	42	10	0.29	68	29	3	0.58	75	25	0	0.60
Margarine	64	27	9	0.52	48	32	19	0.31	71	26	3	0.63	71	21	7	0.62
Gourds and squashes	64	27	9	0.51	58	29	13	0.43	55	32	13	0.43	82	18	0	0.76
Sweetened beverages	64	31	5	0.50	55	35	10	0.38	61	37	3	0.49	79	18	4	0.67
Flavored cheese curds	63	28	9	0.48	55	29	16	0.39	66	29	5	0.54	68	25	7	0.54
Whole meal cereals	63	23	14	0.52	48	23	29	0.36	74	21	5	0.68	64	25	11	0.53
Milk and milk beverages—natural	62	25	13	0.46	42	39	19	0.26	68	18	13	0.57	75	18	7	0.58
Cream	62	28	10	0.47	55	26	19	0.38	53	37	11	0.39	82	18	0	0.74
Tropical fruits	62	30	8	0.43	55	29	16	0.37	68	24	8	0.54	61	39	0	0.37
Offal products	62	27	11	0.42	61	26	13	0.42	63	24	13	0.44	61	32	7	0.41
Fruit juices and nectars	62	34	4	0.48	65	26	10	0.52	55	42	3	0.39	68	32	0	0.56
Milk beverages—sweetened	61	28	11	0.44	45	26	29	0.22	61	34	5	0.45	79	21	0	0.68
Refined cereals	61	35	4	0.44	58	35	6	0.39	63	34	3	0.50	61	36	4	0.43
Dry and processed pulses	61	27	12	0.41	48	35	16	0.24	61	26	13	0.41	75	18	7	0.58
Seeds and bran	61	29	10	0.44	42	32	26	0.23	71	24	5	0.61	68	32	0	0.42
Stone fruit	60	33	7	0.42	45	39	16	0.27	61	34	5	0.42	75	25	0	0.64
Berries	60	31	9	0.45	52	29	19	0.32	58	37	5	0.44	71	25	4	0.61
Fruit preserves and fruit condiments	60	31	9	0.46	42	45	13	0.21	66	26	8	0.54	71	21	7	0.61
Vegetable and vegetable-fruit juices	60	23	18	0.45	52	26	23	0.34	58	24	18	0.44	71	18	11	0.61
Cheese curds	58	37	5	0.40	58	32	10	0.44	53	42	5	0.32	64	36	0	0.47
Ice-creams and custard	56	41	3	0.35	45	45	10	0.15	61	39	0	0.40	61	39	0	0.45
Breakfast cereals	55	36	9	0.39	42	45	13	0.25	50	42	8	0.32	75	18	7	0.65
Root vegetables and others	51	32	18	0.32	32	35	32	0.05	55	26	18	0.41	64	36	0	0.47
Mean for all food items	68	25	7	0.52	60	28	12	0.41	68	26	6	0.53	77	21	3	0.65

¹ Sorted by compatible classification (%) for the total sample; k–the Fleiss’ kappa.