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首页> 外文期刊>Economics and human biology >Night light intensity and women's body weight: Evidence from Nigeria
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Night light intensity and women's body weight: Evidence from Nigeria

机译：夜光强度和女性体重：来自尼日利亚的证据

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摘要

The prevalence of overweight and obesity are increasing in many African countries and hence becoming regional public health challenges. We employ satellite-based night light intensity data as a proxy for urbanization to investigate the relationship between urbanization and women's body weight. We use two rounds of the Demographic and Health Survey data from Nigeria. We employ both nonparametric and parametric estimation approaches that exploit both the cross-sectional and longitudinal variations in night light intensities. Our empirical analysis reveals nonlinear relationships between night light intensity and women's body weight measures. Doubling the sample's average level of night light intensity is associated with up to a ten percentage point increase in the probability of overweight. However, despite the generally positive relationship between night light intensity and women's body weight, the strength of the relationship varies across the assorted stages of night light intensity. Early stages of night light intensity are not significantly associated with women's body weight, while higher stages of nightlight intensities are associated with higher rates of overweight and obesity. Given that night lights are strong predictors of urbanization and related economic activities, our results hint at nonlinear relationships between various stages of urbanization and women's body weight. (C) 2018 Elsevier B.V. All rights reserved.
机译：在许多非洲国家，超重和肥胖的患病率正在上升，因此成为区域公共卫生的挑战。我们采用基于卫星的夜光强度数据作为城市化的代理，以研究城市化与女性体重之间的关系。我们使用来自尼日利亚的两轮人口统计和健康调查数据。我们采用非参数和参数估计方法，它们利用了夜间光强度的横截面和纵向变化。我们的经验分析揭示了夜灯强度与女性体重测量之间的非线性关系。将样品的夜间照明强度的平均水平加倍会使超重几率增加多达百分之十。然而，尽管夜灯强度和女性体重之间通常呈正相关关系，但这种关系的强度在夜灯强度的各个阶段中都不同。夜灯强度的早期与女性体重没有显着相关，而夜灯强度的较高阶段与超重和肥胖率较高相关。鉴于夜灯是预测城市化及相关经济活动的有力指标，因此我们的结果暗示了城市化各个阶段与女性体重之间的非线性关系。 （C）2018 Elsevier B.V.保留所有权利。

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