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Assessing validity of a short food frequency questionnaire on present dietary intake of elderly Icelanders.

https://arctichealth.org/en/permalink/ahliterature126210
Source
Nutr J. 2012;11:12
Publication Type
Article
Date
2012
Author
Tinna Eysteinsdottir
Inga Thorsdottir
Ingibjorg Gunnarsdottir
Laufey Steingrimsdottir
Author Affiliation
Unit for Nutrition Research, University of Iceland and Landspitali National-University Hospital, Reykjavik, Iceland. tinnaey@landspitali.is
Source
Nutr J. 2012;11:12
Date
2012
Language
English
Publication Type
Article
Keywords
Aged
Animals
Cod Liver Oil
Coffee
Dairy Products
Diet - statistics & numerical data
Diet Records
Diet Surveys
Energy intake
Female
Food Habits
Fruit
Geriatric Assessment
Humans
Iceland
Interviews as Topic
Male
Meat
Nutrition Assessment
Questionnaires - standards
Sex Factors
Tea
Vegetables
Abstract
Few studies exist on the validity of food frequency questionnaires (FFQs) administered to elderly people. The aim of this study was to assess the validity of a short FFQ on present dietary intake, developed specially for the AGES-Reykjavik Study, which includes 5,764 elderly individuals. Assessing the validity of FFQs is essential before they are used in studies on diet-related disease risk and health outcomes.
128 healthy elderly participants (74 y ± 5.7; 58.6% female) answered the AGES-FFQ, and subsequently filled out a 3-day weighed food record. Validity of the AGES-FFQ was assessed by comparing its answers to the dietary data obtained from the weighed food records, using Spearman's rank correlation, Chi-Square/Kendall's tau, and a Jonckheere-Terpstra test for trend.
For men a correlation = 0.4 was found for potatoes, fresh fruits, oatmeal/muesli, cakes/cookies, candy, dairy products, milk, pure fruit juice, cod liver oil, coffee, tea and sugar in coffee/tea (r = 0.40-0.71). A lower, but acceptable, correlation was also found for raw vegetables (r = 0.33). The highest correlation for women was found for consumption of rye bread, oatmeal/muesli, raw vegetables, candy, dairy products, milk, pure fruit juice, cod liver oil, coffee and tea (r = 0.40-0.61). An acceptable correlation was also found for fish topping/salad, fresh fruit, blood/liver sausage, whole-wheat bread, and sugar in coffee/tea (r = 0.28-0.37). Questions on meat/fish meals, cooked vegetables and soft drinks did not show a significant correlation to the reference method. Pearson Chi-Square and Kendall's tau showed similar results, as did the Jonckheere-Terpstra trend test.
A majority of the questions in the AGES-FFQ had an acceptable correlation and may be used to rank individuals according to their level of intake of several important foods/food groups. The AGES-FFQ on present diet may therefore be used to study the relationship between consumption of several specific foods/food groups and various health-related endpoints gathered in the AGES-Reykjavik Study.
Notes
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PubMed ID
22413931 View in PubMed
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Do descriptive norms related to parents and friends predict fruit and vegetable intake similarly among 11-year-old girls and boys?

https://arctichealth.org/en/permalink/ahliterature271271
Source
Br J Nutr. 2016 Jan 14;115(1):168-75
Publication Type
Article
Date
Jan-14-2016
Author
Elviira Lehto
Carola Ray
Ari Haukkala
Agneta Yngve
Inga Thorsdottir
Eva Roos
Source
Br J Nutr. 2016 Jan 14;115(1):168-75
Date
Jan-14-2016
Language
English
Publication Type
Article
Keywords
Attitude
Child
Diet - standards
Eating
Energy intake
Female
Finland
Food Habits
Food Preferences
Friends
Fruit
Humans
Male
Parents
Sex Factors
Social Environment
Surveys and Questionnaires
Vegetables
Abstract
We examined whether there are sex differences in children's fruit and vegetable (FV) intake and in descriptive norms (i.e. perceived FV intake) related to parents and friends. We also studied whether friends' impact is as important as that of parents on children's FV intake. Data from the PRO GREENS project in Finland were obtained from 424 children at the age 11 years at baseline. At baseline, 2009 children filled in a questionnaire about descriptive norms conceptualised as perceived FV intake of their parents and friends. They also filled in a validated FFQ that assessed their FV intake both at baseline and in the follow-up in 2010. The associations were examined with multi-level regression analyses with multi-group comparisons. Girls reported higher perceived FV intake of friends and higher own fruit intake at baseline, compared with boys, and higher vegetable intake both at baseline and in the follow-up. Perceived FV intake of parents and friends was positively associated with both girls' and boys' FV intake in both study years. The impact of perceived fruit intake of the mother was stronger among boys. The change in children's FV intake was affected only by perceived FV intake of father and friends. No large sex differences in descriptive norms were found, but the impact of friends on children's FV intake can generally be considered as important as that of parents. Future interventions could benefit from taking into account friends' impact as role models on children's FV intake.
PubMed ID
26450715 View in PubMed
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