Table 1.

Number of women completing the food record and for whom analytical data on biomarkers are available.

Age group	Food record	P-folate	Ery-folate	P-25(OH)D	UIC	P-ferritin
18–30 years	203	28	26	27	26	28
31–44 years	247	38	35	37	37	38
45–64 years	357	54	53	51	50	54
65–80 years	198	30	27	29	27	30
All	1005	150	141	144	140	150