Comparison of two dietary assessment methods by food consumption: results of the German National Nutrition Survey II.
Eur J Nutr
; 54(3): 343-54, 2015 Apr.
Article
in En
| MEDLINE
| ID: mdl-24829069
ABSTRACT
PURPOSE:
To further characterise the performance of the diet history method and the 24-h recalls method, both in an updated version, a comparison was conducted.METHODS:
The National Nutrition Survey II, representative for Germany, assessed food consumption with both methods. The comparison was conducted in a sample of 9,968 participants aged 14-80. Besides calculating mean differences, statistical agreement measurements encompass Spearman and intraclass correlation coefficients, ranking participants in quartiles and the Bland-Altman method.RESULTS:
Mean consumption of 12 out of 18 food groups was higher assessed with the diet history method. Three of these 12 food groups had a medium to large effect size (e.g., raw vegetables) and seven showed at least a small strength while there was basically no difference for coffee/tea or ice cream. Intraclass correlations were strong only for beverages (>0.50) and revealed the least correlation for vegetables (<0.20). Quartile classification of participants exhibited more than two-thirds being ranked in the same or adjacent quartile assessed by both methods. For every food group, Bland-Altman plots showed that the agreement of both methods weakened with increasing consumption.CONCLUSIONS:
The cognitive effort essential for the diet history method to remember consumption of the past 4 weeks may be a source of inaccurateness, especially for inhomogeneous food groups. Additionally, social desirability gains significance. There is no assessment method without errors and attention to specific food groups is a critical issue with every method. Altogether, the 24-h recalls method applied in the presented study, offers advantages approximating food consumption as compared to the diet history method.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Nutrition Assessment
/
Nutrition Surveys
/
Feeding Behavior
Type of study:
Prognostic_studies
Limits:
Adolescent
/
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
Europa
Language:
En
Journal:
Eur J Nutr
Journal subject:
CIENCIAS DA NUTRICAO
Year:
2015
Type:
Article