Development of dietary assessment methods for use in the South Asian community
Development of dietary assessment methods for use in the South Asian community
The main objective of this study was to develop and validate methods for assessing dietary intakes in the South Asian community. A 75-food item food frequency questionnaire (FFQ) and a food checklist were developed. Together with a 24 hour recall of intake, the FFQ and food checklist were calibrated against a 4-day weighed record (WR) as the reference method.
The calibration studies were carried out in two parts. The first calibration study was of the FFQ in both men and women while the second calibration study was that of the food checklist and the 24 recall in women only. In the FFQ calibration study, a total of 58 subjects (23 men, 35 women) between the ages of 19 and 76 years of Pakistani, Punjabi and Gujerati origin participated. In both calibration studies, demographic information of each subject was gathered. This allowed us to determine any differences between responders and non responders and non-responders. For the first calibration study, results for men and women combined together suggested reasonable agreement between FFQ and WR estimates of intake, gender specific agreement was, however, poor. The ranking of subjects was poor with gross misclassification in the range of 5% to 14% in men and 15% to 29% in women.
In the second calibration study, 44 women between the ages of 17 and 60 years of Pakistani, Punjabi and Gujerati origin participated. There was also poor correlation between nutrient estimates of food checklist vs WR and 24 hour recall vs WR. 13% and 14% to 27% of the subjects in the food checklist and 24 hour recall respectively were grossly misclassified in their ranking.
In both studies, subject recruitment and completion of the study protocol were major problems, which undermined the confidence with which one can interpret the results.
University of Southampton
Karim, Norimah A
6c573ad1-def3-4e92-a309-9875c1df4067
1997
Karim, Norimah A
6c573ad1-def3-4e92-a309-9875c1df4067
Karim, Norimah A
(1997)
Development of dietary assessment methods for use in the South Asian community.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
The main objective of this study was to develop and validate methods for assessing dietary intakes in the South Asian community. A 75-food item food frequency questionnaire (FFQ) and a food checklist were developed. Together with a 24 hour recall of intake, the FFQ and food checklist were calibrated against a 4-day weighed record (WR) as the reference method.
The calibration studies were carried out in two parts. The first calibration study was of the FFQ in both men and women while the second calibration study was that of the food checklist and the 24 recall in women only. In the FFQ calibration study, a total of 58 subjects (23 men, 35 women) between the ages of 19 and 76 years of Pakistani, Punjabi and Gujerati origin participated. In both calibration studies, demographic information of each subject was gathered. This allowed us to determine any differences between responders and non responders and non-responders. For the first calibration study, results for men and women combined together suggested reasonable agreement between FFQ and WR estimates of intake, gender specific agreement was, however, poor. The ranking of subjects was poor with gross misclassification in the range of 5% to 14% in men and 15% to 29% in women.
In the second calibration study, 44 women between the ages of 17 and 60 years of Pakistani, Punjabi and Gujerati origin participated. There was also poor correlation between nutrient estimates of food checklist vs WR and 24 hour recall vs WR. 13% and 14% to 27% of the subjects in the food checklist and 24 hour recall respectively were grossly misclassified in their ranking.
In both studies, subject recruitment and completion of the study protocol were major problems, which undermined the confidence with which one can interpret the results.
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Published date: 1997
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Local EPrints ID: 462968
URI: http://eprints.soton.ac.uk/id/eprint/462968
PURE UUID: 17018f36-e6cc-4806-b47c-56929f1df3e3
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Date deposited: 04 Jul 2022 20:32
Last modified: 16 Mar 2024 19:00
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Author:
Norimah A Karim
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