• Indication
• Pros and cons
• Practical considerations
• Resources required
• References
• Examples and links

• Dietary assessment
• Methods
• Duplicate Diets
• Practical considerations

Practical considerations

Asking respondents to keep a weighed food diary is useful to act as a check on the completeness of the duplicate portions. The weighed diary also serves as a way of checking portion sizes of the duplicate. Bingham (1995) suggested that if there is more than a 20g discrepancy between these weights it should be investigated. One study used an arbitrary 10% difference between weights as the cut-off (Lightowler, 1998).

Regular fieldworker visits every couple of days are required to collect food and monitor compliance. At the end of the assessment the diet diary should be reviewed in person with the respondent for clarification. 

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