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• W3164258535 abstract "Although interventional studies demonstrate that preventing malaria during pregnancy can reduce the low birth weight (i.e., child's birth weight $<$ 2,500 grams) rate, it remains unknown whether natural changes in parasite transmission and malaria burden can improve birth outcomes. We conduct an observational study of the effect of changing malaria burden on low birth weight using data from 18,112 births in 19 countries in sub-Saharan African countries during the years 2000--2015. A malaria prevalence decline from a high rate (Plasmodium falciparum parasite rate in children aged 2-up-to-10 (i.e., $Pftext{PR}_{2-10}$) $>$ 0.4) to a low rate ($Pftext{PR}_{2-10}$ $<$ 0.2) is estimated to reduce the rate of low birth weight by 1.48 percentage points (95% confidence interval: 3.70 percentage points reduction, 0.74 percentage points increase), which is a 17% reduction in the low birth weight rate compared to the average (8.6%) in our study population with observed birth weight records (1.48/8.6 $approx$ 17%). When focusing on first pregnancies, a decline in malaria prevalence from high to low is estimated to have a greater impact on the low birth weight rate than for all births: 3.73 percentage points (95% confidence interval: 9.11 percentage points reduction, 1.64 percentage points increase). Although the confidence intervals cannot rule out the possibility of no effect at the 95% confidence level, the concurrence between our primary analysis, secondary analyses, and sensitivity analyses, and the magnitude of the effect size, contribute to the weight of the evidence suggesting that declining malaria burden has an important effect on birth weight at the population level. The novel statistical methodology developed in this article, a pair-of-pairs approach to a difference-in-differences study, could be useful for many settings in which the units observed are different at different times." @default.
• W3164258535 created "2021-06-07" @default.
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• W3164258535 date "2020-12-01" @default.
• W3164258535 modified "2023-09-26" @default.
• W3164258535 title "Relationship between changing malaria burden and low birth weight in sub-Saharan Africa: a difference-in-differences study via a pair-of-pairs approach" @default.
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• W3164258535 doi "https://doi.org/10.48550/arxiv.2012.00860" @default.
• W3164258535 hasPublicationYear "2020" @default.
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