The abstract mentions the researchers couldn't find causation. So a potential 4% increase, worth comparing with the 100% increase from living next to a coal plant
https://pmc.ncbi.nlm.nih.gov/articles/PMC11301007/A similar study in Korea https://link.springer.com/article/10.1186/s12889-026-26715-8 found "No consistent gradient by residential proximity was observed across sites".
