Differences between participants and non-participants in a population study on nutrition and health in the elderly
Article Abstract:
The selection of subjects to a population study on nutrition and health in the elderly was evaluated by inviting a random sample as participants and non-participants by telephone interviews. It was shown that selectivity in participation exerts potential bias among subjects and is more marked in areas of topic-related variables such as eating a cooked meal or self-assessed health. Sex, age and marital status have no influence on participation. It is therefore recommended that reporting results from food surveys must be adjusted according to selectivities that predispose to bias.
Publication Name: European Journal of Clinical Nutrition
Subject: Health
ISSN: 0954-3007
Year: 1992
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Who completes seven-day food records?
Article Abstract:
A study was done to characterize participants who completed the seven-day food record forms. Most of the participants come from older age groups and composed mainly of women. A majority of the volunteers are non-smokers or else had quit smoking. School education and vocational training have no significant implications nor does marital status. The dietary values of respondents and the non-respondents' food consumption show no differences and was not significant.
Publication Name: European Journal of Clinical Nutrition
Subject: Health
ISSN: 0954-3007
Year: 1992
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Reproducibility and validity of 7-day food records
Article Abstract:
A study was done to evaluate the validity and reproducibility of the seven-day food record method after collection of 24-hour urine specimens from volunteers. It was shown that the method provides a reproducible description of food habits of a group regarding macronutrients and most vitamins, minerals and trace elements. In addition, estimations from urine nitrogen excretion show that the seven-day food record has good validity.
Publication Name: European Journal of Clinical Nutrition
Subject: Health
ISSN: 0954-3007
Year: 1992
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