Table 2.

Average daily intake of nutrients as estimated by the first and second questionnaire and by 24-hour recalls for French study subjects

Nutrients	Food questionnaire 1		Food questionnaire 2		24-hour recalls
	n = 115		n = 108		n = 119
	Mean	SD	Mean	SD	Mean	SD
Energy kJ	9656	3645	8502*	2688	6993*	1455
Protein g	107	37	95*	26	76*	13
Carbohydrates g	217	96	195*	72	170*	45
Fat g	109	49	93*	37	74*	19
Alcohol g	9	11	9	9	8	7
Cholesterol mg	516	228	438*	189	386*	155
Dietary fibre g	18	6	16*	5	13*	3
Vitamin C mg	117	62	95*	42	83*	32
Retinol μg	1206	1165	1019*	942	629*	769
β-carotene μg	5265	2839	4464*	2547	3915*	2008
Vitamin E mg	14	8	12*	6	10*	4
Calcium mg	1243	719	1111*	567	777*	245
Iron mg	14	4	12*	3	10*	2
Energy (no alcohol) kJ	9392	3586	8235	2663	6742	1421
Energy % from
alcohol	3	3	3	3	4	3
protein	19	4	19	4	18	3
carbohydrate	37	8	38	8	41	6
fat	42	7	41	7	39	4

^*Significantly different from the value of the first questionnaire: Signed rank test for foods, Student’s t-test P = 0.05.