Contributions of food categories to absolute nutrient intake and between-person variation within a representative sample of 2677 Norwegian men and women
DOI:
https://doi.org/10.5324/nje.v10i1.511Abstract
ABSTRACT
Semi-quantitative food frequency data from a nation-wide, representative sample of 2677 Norwegian
men and women were analysed to identify food categories contributing most to absolute intake and
between-person variation in intake of energy and nine nutrients. The 149 food categories in the questionnaire
were ranked according to their contribution to absolute nutrient intake, and categories contributing
at least 0.5% to the average absolute intake were included in a stepwise regression model. The
number of food categories explaining 90% of the between-person variation varied from 2 categories for
b
-carotene to 33 for a-tocopherol. The models accounted for 53–76% of the estimated absolute nutrient
intakes. These analyses present a meaningful way of restricting the number of food categories in
questionnaires aimed at capturing the between-person variation in energy or specific nutrient intakes.
N
ORSK SAMMENDRAG
Semikvantitative matvarefrekvensdata fra et landsrepresentativt utvalg av 2677 norske menn og kvinner
ble analysert for å identifisere de matvarekategoriene som bidro mest til absolutt inntak og til variasjon
i inntak mellom individer for energi og ni næringsstoffer. De 149 matvarekategoriene ble rangert i
forhold til deres bidrag til inntaket av et næringsstoff, og de kategoriene som bidro med minst 0,5% av
gjennomsnittlig inntak ble inkludert i en trinnvis regresjonsmodell. Antallet kategorier som forklarte
90% av variasjonen mellom individer varierte fra 2 kategorier for
b-karoten til 33 for a-tokoferol.
Modellene inkluderte 53–76% av det estimerte absoluttinntaket av næringsstoffene. Disse analysene
peker på en meningsfylt måte å redusere antall kostspørsmål i spørreskjema som er rettet mot å fange
opp variasjonen i inntak av energi og utvalgte næringsstoffer mellom personer.
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