Table 3.

Estimates of the correlation of true and FFQ-reported food intakes (ρ_QT) and the attenuation factor (λ) for FFQ-reported food intake, with standard errors; NIH–AARP Diet and Health Study

		Men (n 984)				Women (n 958)
MPED food group	Model	ρQT	SE	λ	SE	ρQT	SE	λ	SE
Cheese	Unadjusted	0·59	0·06	0·55	0·05	0·42	0·08	0·35	0·06
	Energy-adjusted	0·63	0·08	0·58	0·05	0·48	0·10	0·42	0·06
Milk	Unadjusted	0·68	0·03	0·53	0·03	0·67	0·03	0·50	0·03
	Energy-adjusted	0·70	0·03	0·53	0·03	0·73	0·03	0·52	0·03
Total dairy	Unadjusted	0·61	0·04	0·44	0·03	0·58	0·03	0·42	0·03
	Energy-adjusted	0·63	0·04	0·44	0·03	0·73	0·03	0·52	0·03
Whole grains	Unadjusted	0·59	0·04	0·55	0·04	0·48	0·04	0·48	0·05
	Energy-adjusted	0·65	0·04	0·61	0·04	0·53	0·05	0·52	0·05
Non-whole grains	Unadjusted	0·34	0·04	0·24	0·03	0·39	0·05	0·25	0·03
	Energy-adjusted	0·50	0·05	0·37	0·04	0·47	0·06	0·31	0·04
Total grains	Unadjusted	0·35	0·04	0·24	0·03	0·39	0·05	0·23	0·03
	Energy-adjusted	0·54	0·05	0·39	0·03	0·53	0·05	0·31	0·03
Citrus, melon, berry	Unadjusted	0·64	0·03	0·54	0·03	0·57	0·03	0·43	0·03
	Energy-adjusted	0·70	0·03	0·59	0·03	0·62	0·03	0·46	0·03
Other fruit	Unadjusted	0·70	0·03	0·68	0·04	0·60	0·03	0·52	0·03
	Energy-adjusted	0·74	0·03	0·71	0·04	0·64	0·04	0·55	0·03
Total fruit	Unadjusted	0·70	0·02	0·61	0·03	0·58	0·03	0·46	0·03
	Energy-adjusted	0·76	0·03	0·66	0·03	0·65	0·04	0·51	0·03
Dark green vegetables	Unadjusted	0·75	0·10	0·57	0·06	0·52	0·07	0·50	0·05
	Energy-adjusted	0·78	0·10	0·59	0·06	0·58	0·08	0·56	0·06
Orange vegetables	Unadjusted	0·62	0·10	0·41	0·05	0·57	0·07	0·48	0·05
	Energy-adjusted	0·71	0·10	0·50	0·05	0·62	0·07	0·54	0·05
Potatoes	Unadjusted	0·58	0·12	0·37	0·05	0·38	0·07	0·27	0·05
	Energy-adjusted	0·60	0·14	0·40	0·06	0·35	0·11	0·23	0·05
Other starchy vegetables	Unadjusted	*		*		0·50	0·19	0·26	0·07
	Energy-adjusted	*		*		0·56	0·18	0·29	0·07
Tomatoes	Unadjusted	0·44	0·11	0·29	0·05	0·60	0·09	0·42	0·05
	Energy-adjusted	0·54	0·11	0·39	0·06	0·64	0·10	0·45	0·05
Other vegetables	Unadjusted	0·46	0·05	0·37	0·04	0·44	0·05	0·34	0·05
	Energy-adjusted	0·50	0·06	0·43	0·05	0·54	0·06	0·44	0·05
Total vegetables	Unadjusted	0·46	0·04	0·32	0·03	0·42	0·05	0·32	0·04
	Energy-adjusted	0·55	0·05	0·43	0·04	0·52	0·05	0·44	0·04
Legumes	Unadjusted	0·44	0·08	0·44	0·08	0·40	0·23	0·27	0·07
	Energy-adjusted	0·50	0·09	0·48	0·08	0·34	0·20	0·28	0·07
Fish high omega	Unadjusted	0·48	0·11	0·59	0·10	0·46	0·17	0·45	0·12
	Energy-adjusted	0·55	0·13	0·66	0·11	0·60	0·15	0·56	0·12
Fish low omega	Unadjusted	0·39	0·09	0·42	0·09	0·74	0·14	0·47	0·08
	Energy-adjusted	0·42	0·09	0·47	0·09	0·71	0·13	0·50	0·09
Red meat	Unadjusted	0·56	0·05	0·50	0·04	0·83	0·10	0·47	0·04
	Energy-adjusted	0·54	0·05	0·55	0·05	0·84	0·09	0·52	0·05
Poultry	Unadjusted	0·47	0·11	0·34	0·05	0·39	0·09	0·25	0·04
	Energy-adjusted	0·53	0·10	0·42	0·05	0·46	0·09	0·33	0·05
Franks, luncheon meat	Unadjusted	0·61	0·07	0·54	0·05	0·55	0·13	0·36	0·05
	Energy-adjusted	0·64	0·07	0·60	0·05	0·67	0·15	0·39	0·06
Meat, poultry & fish	Unadjusted	0·44	0·04	0·27	0·03	0·45	0·06	0·23	0·03
	Energy-adjusted	0·44	0·06	0·31	0·05	0·53	0·05	0·33	0·03
Eggs	Unadjusted	0·70	0·06	0·78	0·05	0·54	0·11	0·53	0·07
	Energy-adjusted	0·69	0·05	0·81	0·05	0·55	0·11	0·56	0·07
Nuts & seeds	Unadjusted	0·54	0·04	0·58	0·05	0·48	0·07	0·48	0·06
	Energy-adjusted	0·54	0·06	0·56	0·06	0·60	0·10	0·50	0·07
Alcoholic beverages	Unadjusted	0·80	0·03	0·67	0·04	0·81	0·03	0·68	0·04
	Energy-adjusted	0·82	0·03	0·70	0·03	0·81	0·03	0·65	0·04
Added sugars	Unadjusted	0·55	0·03	0·41	0·03	0·46	0·04	0·39	0·03
	Energy-adjusted	0·63	0·03	0·44	0·03	0·58	0·03	0·43	0·03
Discretionary fat (oil)	Unadjusted	0·46	0·05	0·34	0·04	0·30	0·07	0·19	0·04
	Energy-adjusted	0·43	0·05	0·34	0·04	0·38	0·15	0·18	0·04
Discretionary fat (solid)	Unadjusted	0·65	0·04	0·47	0·03	0·50	0·04	0·36	0·03
	Energy-adjusted	0·76	0·03	0·61	0·03	0·64	0·04	0·49	0·03

NIH, National Institutes of Health; MPED, MyPyramid Equivalents Database.

^*For Other starchy vegetables in men, the measurement error model failed to converge.