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Association of short-term ambient heat exposure with maternal anxiety for fetal health: examining the role of heatwave and climate change risk perception
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DOI:10.1016/j.accre.2026.06.007.png)
Abstract
En 中文
Short-term heat exposure has been linked to adverse mental-health outcomes, but its associations with pregnancy-specific maternal anxiety for fetal health (MAFH) remain unclear, and the role of heatwave and climate change risk perception is unknown. Using data from 1746 pregnant women admitted for delivery in Guangzhou, China, we first used restricted cubic splines to characterize the exposure–response relationship between 7-d average ambient temperature before interview and MAFH. Based on a J-shaped relationship, we defined extreme heat exposure as temperatures at or above the 90th percentile and used multivariable linear regression to examine the association between heat and MAFH. Heatwave and climate change risk perception among the participants was measured and potential effect modification was assessed through stratified and interaction analyses. The mean MAFH score was 10.26 (Standard Deviation = 3.68). Extreme heat was associated with a 0.85-point (95% CI: 0.16–1.54) higher MAFH score compared with the reference range (< P50). In stratified analyses, heat was associated with MAFH in the high perception group, whereas no association was observed in the low perception group. However, there was no statistical evidence to support the presence of effect modification. These findings underscore the need to better characterize heat-related health risks in pregnancy and to design communication and adaptation strategies that improve preparedness for extreme heat without exacerbating maternal anxiety.
Keywords:
Extreme heat exposure
Pregnancy-related anxiety
Risk perception
Maternal mental health
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