Journal of Clinical Epidemiology
Volume 58, Issue 8 , Pages 802-808, August 2005

A rapid dietary assessment tool to determine intake of folate was developed and validated

  • Siobhan Hickling

      Affiliations

    • School of Population Health, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
    • Corresponding Author InformationCorresponding author. Tel.: +61-8-6488-7369; fax: +61-8-6488-1188.
  • ,
  • Matthew Knuiman

      Affiliations

    • School of Population Health, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
  • ,
  • Konrad Jamrozik

      Affiliations

    • School of Population Health, University of Queensland, Herston Rd, Herston, Queensland 4006, Australia
  • ,
  • Joseph Hung

      Affiliations

    • Department of Cardiology, Sir Charles Gairdner Hospital and School of Medicine and Pharmacology, University of Western Australia

Accepted 8 December 2004.

Abstract 

Background and Objective

Estimates of dietary folate intake are currently of considerable interest, but no rapid tools are available to assess dietary intake of folate that are well suited to everyday health promotion activities. We developed and tested the reliability and validity of two prototypes of a rapid dietary assessment tool (a folate intake tool, FIT) to determine dietary intake of folate.

Study Design and Setting

Five hundred and sixty eight men and women aged 33–83 years from Perth, Western Australia, completed one of the two prototypes of the tool and gave a fasting blood sample for measurement of serum folate. A subset (n=277) of participants completed the same tool on a second occasion 3–6 weeks later.

Results

The Pearson correlations (r) between folate score from the tool and serum folate were moderately high for both prototypes (FIT-A r=0.54; FIT-B r=0.49). The folate scores for the two prototypes were similar on repeat testing and correlated strongly (FIT-A r=0.75; FIT-B r=0.68).

Conclusions

The rapid dietary assessment tool described here, FIT, provides a valid and reliable measurement of dietary intake of folate for both men and women.

Keywords: Folate, Dietary assessment, Validity, Reliability, Food frequency questionnaire, Biomarker

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PII: S0895-4356(05)00110-1

doi:10.1016/j.jclinepi.2004.12.010

Journal of Clinical Epidemiology
Volume 58, Issue 8 , Pages 802-808, August 2005