Relative Validity and Reproducibility of a Short FoodFrequency Questionnaire to Assess Nutrient Intakesof New Zealand Adults

Nutrients

卷:12

Paula Skidmore¹  Cecilia Ho Yan Sam¹  Sheila Skeaff¹  Sherly Parackal²  Clare Wall³  Kathryn E Bradbury⁴ 

[1] Department of Human Nutrition, University of Otago, PO Box 56, Dunedin, New Zealand;

[2] Department of Social and Preventive Medicine, University of Otago, PO Box 56, Dunedin, New Zealand;

[3] Discipline of Nutrition and Dietetics, University of Auckland, Private Bag 92019, New Zealand;

[4] National Institute for Health Innovation, School of Population Health, University of Auckland,Private Bag 92019, New Zealand;

关键词: food frequency questionnaire;    dietary assessment;    validity;    reproducibility;    short food frequency questionnaire;    nutrient intake;    adults;    new zealand;   

DOI  :  10.3390/nu12030619

来源: DOAJ

【 摘 要 】

There is no recent validated short food frequency questionnaire (FFQ) for use in New
Zealand (NZ) adults. This study aimed to evaluate the relative validity and reproducibility of a short
FFQ in free‐living NZ adults aged 30−59 years. A 57‐item, semi‐quantitative FFQ was developed
and pre‐tested. During a 12‐month study period the FFQ was administrated twice with a 9‐month
interval between administrations. Four two‐day diet records were collected at months 0, 3, 6, and 9
and a blood sample was taken at month 9. Spearman correlations were used to evaluate the validity
of the FFQ with the eight‐day diet records and selected biomarkers. Cross‐classification analysis
and the Bland−Altman method were used to assess the agreement between the FFQ and the diet
record. Reproducibility over nine months was assessed using intra‐class correlations. A total of 132
males and females completed both FFQs, the eight‐day diet record, and provided a blood sample.
The highest energy‐adjusted correlation coefficients were observed for alcohol (0.81), cholesterol
(0.61), and carbohydrate (0.61), with the lowest for sodium (0.29), thiamin (0.33), and niacin
equivalents (0.34). More than three quarters of the participants were correctly classified into the
same or adjacent quartile for most nutrients, with a low proportion of participants being grossly
misclassified (< 10%). For most nutrients, the limits of agreement from the Bland−Altman analyses
were between 50% and 250%. A positive correlation was observed between dietary intakes and
plasma biomarkers for all selected nutrients. The FFQ showed moderate to good reproducibility,
with almost all reliability coefficients ranging from 0.60 to 0.80. This short FFQ was shown to validly
and reliably rank individuals by their habitual intake of most major nutrients, indicating that the
FFQ will offer a time‐efficient way to assess the nutrient intake of NZ adults in future research.

【 授权许可】

Unknown