Abstract
Objective: To examine the relationship between time since immigration and excess body weight.
Methods: Secondary data analysis of a cross-sectional survey of 19,600 Canadians.
Results: The prevalence of excess weight (BMI>25) increases with time since immigration for both men and women. After controlling for birthplace, socio-demographic, lifestyle and health correlates, only female immigrants (less than five years) are significantly less likely to have BMI scores greater than 25 kg/m2 compared to those born in Canada. Stratified analyses, however, revealed similar findings for Asian men who had immigrated less than five years prior to the survey.
Discussion: Our results suggest that length of time since immigration is an important risk factor for excess weight. Further research with longitudinal data, more reliable measures of ethnicity, and anthropometric measures of weight are required to confirm these initial findings.
Résumé
Objectif: Examiner les rapports entre le temps écoulé depuis l’immigration et l’excès de poids.
Méthodes: Analyse secondaire de données issues d’une enquête transversale portant sur 19 600 Canadiens.
Résultats: La prévalence de l’excès de poids (IMC>25) augmente avec le temps écoulé depuis l’immigration, tant chez les hommes que chez les femmes. Après neutralisation des variables corrélées avec le lieu de naissance, la situation socio-démographique, le style de vie et la santé, seules les immigrantes (depuis moins de cinq ans) ont une probabilité nettement moindre d’avoir des résultats pour l’IMC supérieurs à 25 kg/m2 en comparaison avec les personnes nées au Canada. Toutefois, les analyses stratifiées ont fait apparaître des résultats analogues pour les hommes asiatiques qui avaient immigré moins de cinq ans avant l’enquête.
Discussion: Les résultats laissent penser que la durée écoulée depuis l’immigration est un important facteur de risque d’excès de poids. D’autres recherches avec des données longitudinales, des mesures plus fiables de l’ethnicité et des mesures anthropométriques du poids sont nécessaires pour confirmer ces premiers résultats.
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