Finding F-0908

“We identify a significant increase in hemoglobin in the intervention group (0.074 g/dL, 95% CI: 0.002, 0.145) compared to the control group.”

Sinharoy Effects of cooking with liquefied petroleum gas versus biomass on hemoglobin concentrations in pregnant women: a pre-specified exploratory analysis of the HAPIN trial (2026). Nat Commun. Page 1. CKB 1689

Structure

Source: Liquefied petroleum gas (LPG)
Population: pregnant women
Setting: personal exposure of the pregnant woman
Study design: prespecified exploratory analysis of the HAPIN randomised trial in Guatemala, India, Peru and Rwanda: pregnant women were randomised to a liquefied petroleum gas stove and fuel or to their usual biomass stove, with 24-hour personal PM2.5, black carbon and carbon monoxide measured and haemoglobin measured during pregnancy; intention-to-treat and exposure-response mixed models (class 3)
Effect: difference 0.074 (0.002–0.145)
Caveat: the effect is small and its interval nearly touches zero; neither PM2.5 nor black carbon was associated with haemoglobin

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