Impact of the wood-burning Justa cookstove on fine particulate matter exposure: A stepped-wedge randomized trial in rural Honduras.
Impact of the wood-burning Justa cookstove on fine particulate matter exposure: A stepped-wedge randomized trial in rural Honduras.
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DOI：
10.1016/j.scitotenv.2020.144369
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发表时间：
2021-05-01
期刊：
影响因子：
--
通讯作者：
Clark ML
中科院分区：
文献类型：
--
作者：
Benka-Coker ML;Young BN;Keller JP;Walker ES;Rajkumar S;Volckens J;Good N;Quinn C;L'Orange C;Weller ZD;Africano S;Osorto Pinel AB;Peel JL;Clark ML
We evaluated the impact of a biomass stove intervention on fine particulate matter (PM2.5) concentrations using an individual-level, stepped-wedge randomized trial. We enrolled 230 women in rural Honduran households using traditional biomass stoves and randomly allocated them to one of two study arms. The Justa stove, the study intervention, was locally-sourced, wood-burning, and included an engineered combustion chamber and chimney. At each of 6 visits over 3 years, we measured 24-hour gravimetric personal and kitchen PM2.5 concentrations. Half of the households received the intervention after Visit 2 and half after Visit 4. We conducted intent-to-treat analyses to evaluate the intervention effect using linear mixed models with log-transformed kitchen or personal PM2.5 (separately) as the dependent variable, adjusting for time. We also compared PM2.5 concentrations to World Health Organization (WHO) guidelines. Arms 1 and 2 each had 115 participants with 664 and 632 completed visits, respectively. Median 24-hour average personal PM2.5 exposures were 81 µg/m3 (25th–75th percentile: 50–141 µg/m3) for the traditional stove condition (n=622) and 43 µg/m3 (25th–75th percentile: 27–73 µg/m3) for the Justa stove condition (n=585). Median 24-hour average kitchen concentrations were 178 µg/m3 (25th–75th percentile: 69–440 µg/m3; n=629) and 53 µg/m3 (25th–75th percentile: 29–103 µg/m3; n=578) for the traditional and Justa stove conditions, respectively. The Justa intervention resulted in a 32% reduction in geometric mean personal PM2.5 (95% confidence interval [CI]: 20–43%) and a 56% reduction (95% CI: 46–65%) in geometric mean kitchen PM2.5. During rainy and dry seasons, 53% and 41% of participants with the Justa intervention had 24-hr average personal PM2.5 exposures below the WHO interim target-3 guideline (37.5 µg/m3), respectively. The Justa stove intervention substantially lowered personal and kitchen PM2.5 and may be a provisional solution that is feasible for Latin American communities where cleaner fuels may not be available, affordable, or acceptable for some time.
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DOI：
10.1016/s2542-5196(20)30197-2
发表时间：
2020-10
期刊：
The Lancet. Planetary health
影响因子：
--
作者：
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PURE-AIR study
影响因子：
10.4
作者：
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通讯作者：
Smith KR
影响因子：
4.5
作者：
Young, Bonnie N.;Peel, Jennifer L.;Clark, Maggie L.
通讯作者：
Clark, Maggie L.
影响因子：
5.8
作者：
Young BN;Clark ML;Rajkumar S;Benka-Coker ML;Bachand A;Brook RD;Nelson TL;Volckens J;Reynolds SJ;L'Orange C;Good N;Koehler K;Africano S;Osorto Pinel AB;Peel JL
通讯作者：
Peel JL
影响因子：
11.8
作者：
Steenland K;Pillarisetti A;Kirby M;Peel J;Clark M;Checkley W;Chang HH;Clasen T
通讯作者：
Clasen T