Kaushal Neeraj
School of Social Work, Columbia University, Amsterdam Avenue, New York, NY 10027, USA.
Health Econ. 2009 Mar;18(3):291-303. doi: 10.1002/hec.1368.
I study factors associated with prevalence of obesity among immigrants as the length of their stay in the US becomes longer. Using the National Health Interview Surveys for 1990-2004, I create 'synthetic cohorts' of immigrants that allow controlling for two important determinants of obesity: age at arrival and period of arrival in the US. I find that immigrants with a BA degree did not experience any change in obesity as their stay in the US advanced. Obesity among those without a BA degree, however, increased with duration of stay. Similarly, while some ethnic groups experienced increase in obesity with duration, others did not. For those who experienced increase in obesity with duration, the rise was higher during the first five years of residence than later and greater for those who arrived at a relatively young age.
我研究随着移民在美国停留时间的延长，与肥胖患病率相关的因素。利用1990 - 2004年的全国健康访谈调查，我创建了移民的“合成队列”，以便能够控制肥胖的两个重要决定因素：抵达时的年龄和抵达美国的时期。我发现拥有学士学位的移民在美国停留时间延长时，肥胖状况没有任何变化。然而，没有学士学位的移民的肥胖率随着停留时间的延长而增加。同样，虽然一些种族群体的肥胖率随着停留时间的延长而增加，但其他种族群体则没有。对于那些肥胖率随着停留时间延长而增加的群体，在居住的头五年里上升幅度比后期更大，对于那些相对年轻时抵达的人来说上升幅度更大。
