Jon Graham's research while affiliated with University of Montana and other places
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Publications (13)
Background
Western Montana, USA, experiences complex air pollution patterns with predominant exposure sources from summer wildfire smoke and winter wood smoke. In addition, climate change related temperatures events are becoming more extreme and expected to contribute to increases in hospital admissions for a range of health outcomes. Evaluating wh...
Residential wood burning has both practical and traditional values among many indigenous communities of the US Mountain West, although household biomass burning also results in emissions that are harmful to health. In a household-level three-arm placebo-controlled randomized trial, we tested the efficacy of portable filtration units and education i...
Background
Western Montana, USA, experiences complex air pollution patterns with predominant exposure sources from summer wildfire smoke and winter wood smoke. In addition, climate change related temperatures events are becoming more extreme and expected to contribute to increases in hospital admissions for a range of health outcomes. Few studies h...
Background
Classical infectious disease models during epidemics have widespread usage, from predicting the probability of new infections to developing vaccination plans for informing policy decisions and public health responses. However, it is important to correctly classify reported data and understand how this impacts estimation of model paramete...
We developed daily maps of surface fine particulate matter (PM2.5) for the western United States. We used geographically weighted regression fit to air quality station observations with Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth (AOD) data, and meteorological data to produce daily 1-kilometer resolution PM2.5 concen...
Background:
Native Americans living in rural areas often rely upon woodstoves for home heating that can lead to elevated indoor concentrations of fine particulate matter (PM2.5). Wood stove use is associated with adverse health outcomes, which can be a particular risk in vulnerable populations including older adults.
Objectives:
We assessed the...
Background:
Millions of rural U.S. households are heated with wood stoves. Wood stove use can lead to high indoor concentrations of fine particulate matter [airborne particles ≤2.5μm in aerodynamic diameter (PM2.5)] and is associated with lower respiratory tract infection (LRTI) in children.
Objectives:
We assessed the impact of low-cost educati...
Background
Mortality from the novel coronavirus disease-2019 (COVID-19) continues to rise across the United States. Evidence is emerging that environmental factors may contribute to susceptibility to disease and mortality. Greenspace exposure promotes enhanced immunity and may protect against risk of mortality among those with COVID-19.
Objectives...
Citations
... Examples of parameter estimation from data can be found in [70,72,297]. Recently, the Kermack-McKendrick SIR epidemic model was used to study and predict the transmission dynamics of the COVID-19 pandemic [228,244,254,296,331,401,438]. ...
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... The daily time-series dataset of PM 2.5 surface concentrations was previously developed, and details are reported elsewhere [79]. Briefly, these data were produced from air quality station observations, satellite data, and meteorological data to produce daily 1-km resolution surface PM 2.5 concentration estimates to explore health outcome impacts of PM 2.5 across spatiotemporal domains specific to the rural and intermountain western USA. ...
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... Although the EPA does not have corresponding indoor air quality guidelines, the World Health Organization 24-h standard of 15 µg/m 3 is applicable to both ambient and indoor environments. Daily average indoor PM 2.5 concentrations of 20 to 50 µg/m 3 have previously been measured in wood stove households across rural areas of the USA, including in Native American communities (Noonan et al. 2012;Semmens et al. 2015;Ward and Noonan 2008;Singleton et al. 2017;Walker et al. 2021Walker et al. , 2022bWalker et al. , 2022a. ...
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... Participant retention was high. Although the study did not demonstrate a meaningful difference in LRTI in the air filtration or education arms compared with the control arm, in the exposureresponse analysis, odds of LRTI were increased with higher indoor PM 2.5 , providing further evidence that indoor air pollution adversely impacts childhood LRTI [33]. ...
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... The mechanisms driving these effects amid recent COVID-19-related health outcomes are understudied. Evidence suggests potential involvement of immunoregulation and air quality as underlying factors (Russette et al., 2021). It is therefore useful to explore greenspace exposure comprehensively to understand the contributions of greenspace exposure along multiple biophysical pathways such as reducing environmental pollution (mitigation), stress reduction and cognitive enhancement (restoration), and encouraging healthy behaviour (instoration) during the COVID-19 health crisis (Cardinali et al., 2024;Markevych et al., 2017;Marselle et al., 2021). ...
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