This paper investigates the extent to which in utero exposure to temperature shocks affects birth weight outcomes in Vietnam. Exploiting the variations across districts and conception timing within districts, we show that a one standard deviation increase in temperature relative to the local norm (approximately 0.52°C) during the first trimester of pregnancy reduces the child's weight at birth by 67 g or 2.2 percent. Our heterogeneity analysis suggests that infants living in rural areas, born to poor and low-educated mothers are especially vulnerable to temperature shocks.

中文翻译：

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温度冲击对越南出生体重的影响

本文调查了在子宫内暴露于温度冲击对越南出生体重结果的影响程度。利用跨地区的差异和地区内的受孕时间，我们表明，在怀孕的前三个月，相对于当地标准（约 0.52°C）的温度增加一个标准偏差会使孩子出生时的体重减少 67 克或 2.2% . 我们的异质性分析表明，生活在农村地区、贫困和受教育程度低的母亲所生的婴儿特别容易受到温度冲击的影响。