Department of Preventive Medicine and Public Health, School of Medicine, Universidad Autónoma de Madrid, C/Arzobispo Morcillo s/n, E-28029 Madrid, Spain.
Public Health Nutr. 2010 Oct;13(10):1593-8. doi: 10.1017/S1368980009992801. Epub 2009 Dec 3.
Various studies in the USA and Canada have consistently shown a positive association between length of residence of immigrants and obesity. Studies in European countries have obtained less consistent results. The present work assesses the influence of length of residence on the frequency of obesity in immigrants in the city of Madrid, Spain.
We studied a sample of 7155 persons aged 18 years and over residing in the city of Madrid, who were was surveyed between November 2004 and May 2005. Information was collected on immigrant status (country of birth), length of residence in Spain, obesity, sociodemographic characteristics and lifestyle.
Compared with the Spanish population, the odds for obesity in the immigrant population by length of residence was less than one in all groups, becoming closer to one with increasing time of residence (OR = 0.67, 0.73 and 0.81 for immigrants with less than 2, 2-4 and 5-9 years of residence in Spain, respectively), up to 10 or more years of residence, when it declined (OR = 0.69). The magnitude of this association was considerably reduced after adjusting for sociodemographic variables and for perceived health, but was not further modified after adjusting for lifestyle variables.
Length of residence of immigrants in the city of Madrid is not associated with the frequency of obesity. It is possible that the circumstances immigrants encounter after arriving in Spain do not involve an overexposure to factors favouring obesity, relative to those they bring with them.
美国和加拿大的多项研究表明，移民的居住时间长短与肥胖之间呈正相关。欧洲国家的研究得出的结果则不太一致。本研究评估了移民在西班牙马德里市的居住时间长短对肥胖频率的影响。
我们研究了居住在马德里市的 7155 名 18 岁及以上的人群样本，他们于 2004 年 11 月至 2005 年 5 月接受了调查。收集的信息包括移民身份（出生国）、在西班牙的居住时间、肥胖、社会人口特征和生活方式。
与西班牙人口相比，按居住时间长短划分的移民人口肥胖的几率在所有组别中均低于 1，随着居住时间的延长，这一几率逐渐接近 1（居住时间少于 2 年、2-4 年和 5-9 年的移民，其比值比（OR）分别为 0.67、0.73 和 0.81），达到 10 年或更长时间后，该比值再次下降（OR = 0.69）。调整社会人口变量和感知健康状况后，这种关联的幅度明显减小，但进一步调整生活方式变量后，其关联并未改变。
马德里市移民的居住时间长短与肥胖频率无关。可能是移民抵达西班牙后面临的环境并没有使他们过多地接触到促进肥胖的因素，而这些因素与他们自身携带的因素相比是不同的。
