Finding F-1482

“Compared to survey periods with 0 wildfire days, SBP was 3.83 mmHg higher (95% Confidence Interval [95% CI]: 0.22, 7.44) and DBP was 2.36 mmHg higher (95% CI: −0.06, 4.78) during periods with 4+ wildfire days.”

Walker et al. Associations between fine particulate matter and in-home blood pressure during the 2022 wildfire season in Western Montana, USA (2025). Environ Res Health. Page 1. CKB 1145

Structure

Source: Wildfire smoke
Factor: Particulate matter (PM₂.₅ and PM₁₀)
Outcome: Blood pressure
Study design: panel study relating wildfire days to blood pressure: systolic and diastolic pressure of the participants compared between survey periods with and without wildfire days, and against the fine particulate matter of those periods (class 3)
Effect: difference 3.83 (0.22–7.44)
Caveat: an exposure defined by wildfire days, not by a measured indoor concentration

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.