Migration, chiefly from rural to urban areas has been linked to precursor conditions of cardiovascular diseases. We estimated the odds of overweight/obesity ( BMI >=25 kg/m2) associated with different patterns of internal migration, using data from the National Family Health Survey 3, a cross-sectional survey that covered 29 states of India in 2005/06. A total of 56,498 non-pregnant women, aged 15 to 49 years, and 42,190 men, aged 15 to 54 years, with BMI >18.5 kg/m2 were included in the final analysis. Odds ratios (ORs) for overweight/ obesity were computed for different groups of migrants after adjusting for age, socioeconomic status and parity using binomial logistic regression models. All analyses were performed separately for men and women and weighted using national sampling weights. Rural to urban migrant women but not men, had higher odds of being overweight/obese (adjusted OR (AOR): 1.50, 95% confidence interval (CI): 1.36-1.65) compared to non-migrant rural residents. Increased odds were also noted among women migrating from one urban area to another, compared to non-migrant urban women ( A OR: 1.10, 95% CI: 1.02-1.19). Women migrating from urban to rural areas, however had decreased odds (AOR: 0.75, 95% CI: 0.67-0.83) of overweight/ obesity. Thus, apart from confirming rural to urban migration as a risk factor for overweight, this study finds that other patterns of migration are also associated with overweight/obesity.
境內移居，主要是從鄉村到都市地區，被推測與心血管疾病前兆有關。本研究 資料來自2005/06 年印度全國家庭健康調查3，這是一個涵蓋29 個州的橫斷性 調查。評估體重過重及肥胖(BMI>=25 kg/m2)的風險與不同模式的境內移居之相 關性。總共有56,498 名年齡介於15-49 歲的非懷孕女性及42,190 名15-54 歲的 男性，合乎BMI>18.5 kg/m2，被納入最後的分析。校正年齡、社經狀況及生育 數，使用二項式羅吉斯回歸模式，計算不同移居組別的過重及肥胖的勝算比 (ORs)。所有分析均將男女性分開計算，並使用全國抽樣權數加權。從鄉村移 居到都市的女性比起非移居的鄉村女性，有較高的體重過重及肥胖的風險(校 正OR(AOR): 1.05，95% CI: 1.36-1.65)，男性則無差異。從一個都市移居到另 一個都市的女性比起非移居的都市女性，其風險也增加(AOR: 1.10，95% CI: 1.02-1.19)。女性從都市移居到鄉村地區，其過重及肥胖的風險則是降低(AOR: 0.75，95% CI: 0.67-0.83)。因此，除了確認鄉村移居到都市為體重過重的危險 因子以外，這個研究亦發現，其他移居模式也與體重過重/肥胖有關。