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Public Health Nutr. 2012 Apr;15(4):635-9. doi: 10.1017/S136898001100317X. Epub 2011 Nov 29.

Validation of a semi-quantitative FFQ using food records as a reference in older women in the Kuopio Fracture Prevention Study (OSTPRE-FPS).

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Institute of Public Health and Clinical Nutrition, Public Health, University of Eastern Finland, PO Box 1627, 70211 Kuopio, Finland.



To validate an eighty-nine-item semi-quantitative FFQ for measurement of nutrient intakes in elderly women.


FFQ and 3 d food records were filled in by women participating in the Kuopio Fracture Prevention Study (OSTPRE-FPS). Data on intakes of energy, fat, protein, carbohydrate, fibre, Ca, Fe, P, K, Mg, folic acid, vitamin B12, vitamin C, vitamin D and vitamin K from ninety-nine women were available to assess the agreement of the two methods. Validity was assessed using correlation coefficients, cross-classification into quintile categories and Bland-Altman plots. Nutrients relevant to bone health were assessed.


OSTPRE-FPS in Finland.


Elderly women with a mean age 71·3 years.


The FFQ overestimated energy and nutrient intakes as compared with food records by 30-50%. The highest correlation coefficients of the energy-adjusted nutrient intakes between the methods were observed for fibre (0·60), Mg (0·56) and folic acid (0·49) and the lowest for protein and vitamin D (both 0·19). The cross-classification of energy-adjusted nutrient intakes showed that on average 68% of the participants (range 62-78%) were classified into the same or an adjacent quintile category.


The validity of energy and nutrient intakes measured with the FFQ was moderate as compared with 3 d food records in elderly women. The FFQ is a useful tool for the nutrient assessment of elderly women in epidemiological research.

[Indexed for MEDLINE]

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