Evaluation of a digital food photography atlas used as portion size measurement aid in dietary surveys in Greece.
Public Health Nutr
; 19(13): 2369-76, 2016 09.
Article
em En
| MEDLINE
| ID: mdl-26917048
ABSTRACT
OBJECTIVE:
To evaluate how well respondents perceive digital images of food portions commonly consumed in Greece.DESIGN:
The picture series was defined on the basis of usual dietary intakes assessed in earlier large-scale studies in Greece. The evaluation included 2218 pre-weighed actual portions shown to participants, who were subsequently asked to link each portion to a food picture. Mean differences between picture numbers selected and portions actually shown were compared using the Wilcoxon paired signed-rank test. The effect of personal characteristics on participants' selections was evaluated through unpaired t tests (sex and school years) or through Tukey-Kramer pairwise comparisons (age and food groups).SETTING:
Testing of participants' perception of digital food images used in the Greek national nutrition survey.SUBJECTS:
Individuals (n 103, 61 % females) aged 12 years and over, selected on the basis of the target population of the Greek nutrition survey using convenience sampling.RESULTS:
Individuals selected the correct or adjacent image in about 90 % of the assessments and tended to overestimate small and underestimate large quantities. Photographs of Greek traditional pies and meat-based pastry dishes led participants to perceive the amounts in the photos larger than they actually were. Adolescents were more prone to underestimating food quantities through the pictures.CONCLUSIONS:
The digital food atlas appears generally suitable to be used for the estimation of average food intakes in large-scale dietary surveys in Greece. However, individuals who consistently consume only small or only large food portions may have biased perceptions in relation to others.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Percepção de Tamanho
/
Fotografação
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Inquéritos sobre Dietas
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Tamanho da Porção
Limite:
Adolescent
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Adult
/
Aged
/
Aged80
/
Child
/
Female
/
Humans
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Male
/
Middle aged
País/Região como assunto:
Europa
Idioma:
En
Revista:
Public Health Nutr
Assunto da revista:
CIENCIAS DA NUTRICAO
/
SAUDE PUBLICA
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Grécia