Kriterier ved validering av en metode for kost-holdsundersøkelser - Når er validiteten til en metode tilfredsstillende?
DOI:
https://doi.org/10.5324/nje.v10i1.510Abstract
SAMMENDRAG
Det finnes ingen metode for kostholdsundersøkelser som kan måle kostholdet til et individ eller en gruppe
individer uten at det er feil knyttet til dataene. Dette får konsekvenser for tolkningen av resultatene fra
kostholdsundersøkelser og for tolkningen av sammenhengen mellom matinntak og helse. For at mangelfulle
kostholdsdata ikke skal resultere i feil konklusjoner er det viktig å undersøke validiteten til metoder
for kostholdsundersøkelser, samt å vurdere i hvilke sammenhenger en kostholdsmetode gir tilstrekkelig
gode data til at de kan brukes. Ved vurdering av validiteten til metoder for kostholdsundersøkelser er det
tre trinn som inngår; vurdering av design og gjennomføring av en valideringsstudie, vurdering av analyseringen
av kostdataene fra valideringsstudien, samt tolkning av resultatene fra valideringsstudien. I
artikkelen diskuteres hvordan man kan vurdere validiteten til metoder for kostholdsundersøkelser ved å gå
igjennom de tre trinn som er nevnt ovenfor. Dessuten illustreres ved hjelp av tre eksempler på forskjellige
epidemiologiske studier, når validiteten til en kostholdsmetode er tilfredsstillende i en studie, samt hvilke
konsekvenser validiteten kan ha for konklusjonen i en studie.
Frost Andersen L.
Criteria for the validation of dietary assessment methods. When is the validity
satisfactory?
Nor J Epidemiol 2000; 10 (1): 17-24.
ENGLISH SUMMARY
Today there is no method available to measure dietary exposure among individuals or groups of individuals
without error. The errors will affect the interpretation of the results from dietary assessment studies
and have an impact on epidemiological measures of associations between intake and disease. To reduce
these problems it is important to examine the validity of dietary assessment methods, and to examine in
what kind of studies data from a specific dietary assessment method are valid enough to be used. Evaluation
of the validity of dietary assessment methods include three levels; (1) evaluation of the design and
implementation of the validation study, (2) evaluation of the data analysis from the validation study, and
(3) the interpretation of the results from the validation study. This article discusses how to evaluate the
validity of dietary assessment methods using the three levels mentioned above. Furthermore, three examples
of epidemiological studies illustrate when the validity of a dietary assessment method is satisfactory in
a study, and what kind of consequenses the validity may have for the conclusion of a study.
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