title: Validation of a semi-quantitative FFQ using food records as a reference in older women in the Kuopio Fracture Prevention Study (OSTPRE-FPS).
abstract: OBJECTIVE
  To validate an eighty-nine-item semi-quantitative FFQ for measurement of nutrient intakes in elderly women.
  
  
  METHODS
  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.
  
  
  METHODS
  OSTPRE-FPS in Finland.
  
  
  METHODS
  Elderly women with a mean age 71·3 years.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  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.
authors: Institute of Public Health and Clinical Nutrition, Public Health, University of Eastern Finland, PO Box 1627, 70211 Kuopio, Finland. arja.erkkila@uef.fi
authors: Arja T
authors: AT
authors: Erkkilä
authors: Ritva
authors: R
authors: Järvinen
authors: Henna
authors: H
authors: Karvonen
authors: Linda
authors: L
authors: Keronen
authors: Marjo T
authors: MT
authors: Tuppurainen
mesh_terms: D000368:Aged; D004032:Diet / Q000592:standards* / Q000706:statistics & numerical data*; D015930:Diet Records; D004040:Dietary Carbohydrates / Q000008:administration & dosage; D004041:Dietary Fats / Q000008:administration & dosage; D004044:Dietary Proteins / Q000008:administration & dosage; D002149:Energy Intake; D005247:Feeding Behavior; D005260:Female; D005387:Finland; D006801:Humans; D015596:Nutrition Assessment; D009749:Nutrition Surveys; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards*
chemical_list: D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins