Development, validation and item reduction of a food literacy questionnaire (IFLQ-19) with Australian adults

Table 2 Assessment of unidimensionality using PCA and the resulting theoretical and statistical food literacy components

Theoretical domains, components and statistical components of food literacy	KMO^a	Bartlett’s test			Total Variance Explained
	KMO^a	Chi-square	df	p-value^b	Total	% variance explained
Domain 1
1.1
1.1.1	0.85	0916.83	10	< 0.001	3.03	61
1.1.2	0.65	0221.15	6	< 0.001	1.84	47
1.2	0.63	0423.23	6	< 0.001	2.09	52
1.3
1.3.1	0.83	1095.28	10	< 0.001	3.14	63
1.3.2	0.79	0650.99	6	< 0.001	2.56	64
1.3.3	0.75	0527.09	10	< 0.001	2.45	49
Domain 2
2.1	0.85	1140.37	15	< 0.001	3.43	57
2.2
2.2.1	0.77	0635.45	10	< 0.001	2.64	53
2.2.2	0.86	1040.18	21	< 0.001	3.41	49
2.3	0.73	0612.55	3	< 0.001	2.28	76
Domain 3
3.1	0.92	1830.14	28	< 0.001	4.59	57
3.2
3.2.1	0.81	1044.70	15	< 0.001	3.21	54
3.2.2	0.63	0264.51	3	< 0.001	1.85	62
Domain 4
4.1
4.1.1	0.87	0974.10	15	< 0.001	3.26	54
4.1.2	0.53	0442.94	3	< 0.001	1.84	61
4.2
4.2.1	0.95	3327.67	55	< 0.001	6.47	59
4.2.2	0.85	1011.36	10	< 0.001	3.15	63
4.2.3	0.67	0534.12	3	< 0.001	2.16	72
4.3	0.84	1046.45	21	< 0.001	3.38	48

ISSN: 1479-5868