By Pooja Toshniwal PahariaFeb 22 2024Reviewed by Lily Ramsey, LLM In a recent study published in BMJ, researchers assessed exposure-response relationships between chronic fine-size particulate matter exposure and the probability of first-time hospitalization for cardiovascular disease subgroups.
Comparing effect sizes across subtypes might help us understand processes and advise targeted strategies to lessen the impact of PM2.5. The researchers created a causal-type framework resistant to confounding effects and bias caused by inaccuracies in exposure-response estimations. The researchers utilized spatially weighted logistic regressions to estimate ambient PM2.5 values daily at 1.0 km2 grids across the United States from 2000 to 2016.
During the trial, 18% of participants registered with Medicaid. 22% required hospitalization due to a combination of cardiovascular diseases. The most frequent CVD subtype was ischemic heart illness, which affected 8.8% of recipients. Composite CVD-related hospitalization risk rose from 2.6% with exposures of less than or equal to 5.0 µg m-3 to 3.4% with exposures ranging from 9.0 to 10 µg m-3.