Finding F-0992

“Bipollutant models involving CO and PM2.5 also revealed that an interquartile range (IQR) increase in CO concentrations (2.26 ppm) was associated with higher hemoglobin levels [β = 0.04; 95 % confidence interval (CI): 0.01, 0.07], and a lower odds of anemia prevalence [odds ratios (OR) = 0.90; 95 % CI: 0.83, 0.98].”

Deng Association of household air pollution exposure and anemia among pregnant women: Analysis of baseline data from ’Household Air Pollution Intervention Network (HAPIN)’ trial (2024). Environment international. Page 1. CKB 5965

Structure

Factor: Carbon monoxide (CO)
Population: pregnant women
Setting: personal exposure of the pregnant woman
Study design: analysis of baseline data from the HAPIN randomised trial in Guatemala, India, Peru and Rwanda: 24-hour personal PM2.5, black carbon and carbon monoxide of 3,163 pregnant women at 15 weeks of gestation against haemoglobin and anaemia prevalence, in single-pollutant and bipollutant regression models adjusted for confounders (class 4)
Effect: OR 0.90 (0.83–0.98) per one interquartile range of personal carbon monoxide, 2.26 ppm
Sample: 3163 participants
Caveat: carbon monoxide raises haemoglobin, so a lower measured anaemia prevalence does not mean better health - the same physiology as in smokers

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.