Table 1.

Factor loadings of various food items in the principal dietary components obtained using PCA based on (1) unadjusted data and (2) data adjusted for energy using the residual method

Food item	Health conscious		Traditional		Processed		Confectionery		‘Vegetarian’		% Variance explained
(Variance explained)	Unadjusted (10.6%)	Adjusted (11.0%)	Unadjusted (6.9%)	Adjusted (6.4%)	Unadjusted (4.4%)	Adjusted	Unadjusted (6.0%)	Adjusted (5.5%)	Unadjusted (4.5%)	Adjusted (4.0%)	Unadjusted (32.4%)	Adjusted (26.9%)
White bread	−0.535	−0.632	0.075	−0.021	0.367	—	0.080	−0.097	−0.018	−0.018	42.7	41.0
Non-white bread	0.615	0.671	−0.049	−0.011	−0.323	—	−0.057	0.012	0.032	0.054	48.9	45.3
Bran based cereal	0.365	0.386	0.092	0.019	−0.126	—	−0.004	−0.103	0.009	0.022	15.8	16.0
Oat based cereal	0.297	0.295	0.113	0.017	−0.039	—	0.050	−0.105	0.140	0.128	12.5	11.5
Other breakfast cereal	−0.110	−0.188	−0.015	−0.092	0.139	—	0.221	0.066	−0.082	−0.094	8.7	5.7
Biscuits	0.108	0.040	0.023	−0.019	−0.007	—	0.603	0.481	−0.108	−0.131	38.8	25.0
Crispbreads/ crackers	0.218	0.196	0.088	0.084	−0.010	—	0.052	0.012	0.156	0.109	8.2	5.7
Puddings	0.265	0.163	0.064	−0.030	0.124	—	0.389	0.163	−0.112	−0.198	25.4	9.3
Cakes/buns	0.202	0.097	0.004	−0.057	0.086	—	0.559	0.405	−0.080	−0.156	36.7	20.1
Poultry	0.270	0.153	0.223	0.193	0.121	—	0.023	−0.082	−0.535	−0.577	42.4	40.0
Red Meat	0.147	0.011	0.219	0.173	0.166	—	0.101	−0.068	−0.596	−0.649	46.3	45.6
Meat pies	−0.105	−0.395	0.032	−0.101	0.538	—	0.087	−0.170	−0.118	−0.116	32.3	20.9
Offal	0.087	−0.025	0.091	0.060	0.248	—	−0.066	−0.126	0.087	−0.089	8.9	2.8
Sausages, burgers	−0.091	−0.392	−0.062	−0.094	0.565	—	0.029	−0.224	−0.169	−0.147	36.1	23.4
Fried foods	−0.094	−0.415	0.001	−0.049	0.574	—	0.164	−0.138	−0.009	0.043	36.5	19.6
Pizza	0.233	0.018	−0.105	−0.145	0.349	—	0.104	−0.103	0.105	0.143	19.8	2.0
Fish	0.457	0.349	0.155	0.120	0.133	—	−0.075	−0.190	−0.018	−0.061	25.7	20.8
Eggs	0.278	0.031	0.090	0.042	0.403	—	−0.027	−0.349	−0.016	0.044	24.9	12.6
Cheese	0.443	0.360	0.078	0.021	0.053	—	0.122	−0.085	0.026	0.070	22.1	14.2
Meat substitutes	0.180	0.134	0.066	0.059	0.124	—	−0.028	−0.037	0.577	0.546	38.6	32.1
Pulses	0.356	0.342	0.146	0.129	0.006	—	−0.055	−0.097	0.565	0.527	47.0	42.1
Nuts	0.278	0.253	0.116	0.086	0.051	—	0.052	−0.038	0.531	0.476	37.8	29.9
Chips	−0.255	−0.569	−0.057	−0.130	0.561	—	0.235	−0.058	−0.036	0.043	44.0	34.6
Roast potatoes	−0.271	−0.473	0.225	0.199	0.388	—	0.154	−0.006	−0.165	−0.156	32.6	28.8
Potatoes (not chips)	0.254	0.149	0.321	0.291	0.104	—	0.070	−0.099	−0.219	−0.217	23.1	16.4
Pasta	0.578	0.451	0.045	0.044	0.136	—	−0.070	−0.157	0.121	0.087	37.4	23.8
Rice	0.543	0.438	0.078	0.071	0.125	—	−0.120	−0.179	0.063	0.018	33.5	22.9
Baked beans	0.004	−0.230	0.049	0.042	0.413	—	0.081	−0.148	0.045	0.117	18.2	9.0
Leafy green vegetables	0.045	0.026	0.809	0.796	0.011	—	−0.015	−0.058	0.041	0.048	65.8	64.0
Other green vegetables	0.147	0.146	0.799	0.789	−0.043	—	−0.004	−0.025	0.054	0.056	66.5	64.8
Carrots	0.178	0.160	0.704	0.688	−0.020	—	0.023	−0.028	0.008	0.003	52.8	50.0
Other root vegetables	0.084	0.076	0.606	0.600	0.018	—	0.003	−0.012	0.106	0.098	38.6	37.6
Peas	0.174	0.024	0.352	0.346	0.190	—	0.063	−0.088	−0.104	−0.085	20.5	13.5
Salad	0.420	0.404	0.212	0.183	−0.078	—	−0.022	−0.086	0.100	0.094	23.8	21.3
Fresh fruit	0.518	0.548	0.182	0.154	−0.229	—	0.090	0.035	0.005	−0.006	36.2	32.5
Fruit juice	0.488	0.474	0.079	0.035	−0.090	—	0.085	−0.011	0.057	0.029	26.3	22.7
Cola	−0.209	−0.307	−0.081	−0.052	0.221	—	0.142	0.105	0.051	0.058	12.2	11.1
Tea	−0.100	−0.155	0.078	−0.009	0.156	—	0.029	−0.137	−0.037	−0.004	4.3	4.3
Coffee	−0.161	−0.185	0.053	0.030	0.105	—	0.002	−0.025	−0.037	−0.018	4.1	3.6
Herbal tea	0.186	0.223	0.068	0.070	−0.085	—	−0.057	−0.047	0.302	0.292	14.1	14.2
Sweets	−0.098	−0.171	0.071	0.045	0.069	—	0.514	0.413	0.061	0.055	28.7	20.5
Chocolate	0.000	−0.088	0.022	−0.016	0.036	—	0.717	0.674	0.058	0.067	51.9	46.7
Chocolate bars	−0.085	−0.214	−0.020	−0.079	0.096	—	0.749	0.684	0.021	0.053	57.8	52.3
Crisps	−0.101	−0.295	−0.041	−0.075	0.292	—	0.381	0.203	0.004	0.033	24.2	13.5

Abbreviation: PCA, principal component analysis.

Loadings >0.3 are shown in bold.