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DINER (Data Into Nutrients for Epidemiological Research) – a new data-entry program for nutritional analysis in the EPIC–Norfolk cohort and the 7-day diary method

Published online by Cambridge University Press:  02 January 2007

AA Welch
Affiliation:
University of Cambridge, Institute of Public Health, Strangeways Research Laboratory, Wort's Causeway, Cambridge CB1 8RN, UK
A McTaggart
Affiliation:
University of Cambridge, Institute of Public Health, Strangeways Research Laboratory, Wort's Causeway, Cambridge CB1 8RN, UK
AA Mulligan
Affiliation:
University of Cambridge, Institute of Public Health, Strangeways Research Laboratory, Wort's Causeway, Cambridge CB1 8RN, UK
R Luben
Affiliation:
University of Cambridge, Institute of Public Health, Strangeways Research Laboratory, Wort's Causeway, Cambridge CB1 8RN, UK
N Walker
Affiliation:
JDRF/WT Diabetes and Inflammation Laboratory, University of Cambridge, Cambridge CS2 2XY, UK
KT Khaw
Affiliation:
University of Cambridge, Institute of Public Health, Strangeways Research Laboratory, Wort's Causeway, Cambridge CB1 8RN, UK
NE Day
Affiliation:
University of Cambridge, Institute of Public Health, Strangeways Research Laboratory, Wort's Causeway, Cambridge CB1 8RN, UK
SA Bingham
Affiliation:
Dunn MRC Human Nutrition Unit, Cambridge, CB2 2XY, UK
Corresponding
E-mail address:
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Abstract

Background and objective:

A new data-entry system (DINER – Data Into Nutrients for Epidemiological Research) for food record methods has been devised for the European Prospective Investigation into Cancer (EPIC) cohort study of 25 000 men and women in Norfolk. DINER has been developed to address the problems of efficiency and consistency of data entry, comparability of data, maximising information and future flexibility in large long-term population studies of diet and disease that use record methods to assess dietary intakes. DINER captures more detail than traditional systems and enables provision of new variables for specific food types or groups. The system has been designed to be fully flexible and easy to update. Analysis of consistency of data entry was tested in a group of 3525 participants entered by 25 coders.

Results:

A food list of 9000 food items and values for 24 000 portion sizes have been incorporated into the database, using information from the 5979 diaries coded since 1995. Analysis of consistency of entry indicated that this has largely been achieved. The effect of coders in a multivariate regression model was significant only if the three coders involved in early use of the program were included (P<0.013).

Conclusions:

The development of DINER has facilitated the use of more accurate record methods in large-scale epidemiological studies of diet and disease. Furthermore, the retention of original information as an extensive food list allows greater flexibility in later analyses of data of multiple dietary hypotheses.

Type
Research Article
Copyright
Copyright © CABI Publishing 2001

References

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DINER (Data Into Nutrients for Epidemiological Research) – a new data-entry program for nutritional analysis in the EPIC–Norfolk cohort and the 7-day diary method
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