scholarly journals Ambient Air Pollution and Cardiorespiratory Outcomes amongst Adults Residing in Four Informal Settlements in the Western Province of South Africa

2021 ◽  
Vol 18 (24) ◽  
pp. 13306
Author(s):  
Herman Bagula ◽  
Toyib Olaniyan ◽  
Kees de Hoogh ◽  
Apolline Saucy ◽  
Bhawoodien Parker ◽  
...  
Keyword(s):  
South Africa ◽  
Air Pollution ◽  
Chest Pain ◽  
Respiratory Health ◽  
Informal Settlements ◽  
Ambient Air ◽  
Interquartile Range ◽  
Ambient Air Pollution ◽  
Western Cape ◽  
Cross Sectional

Few studies have investigated the relationship between ambient air pollution and cardiorespiratory outcomes in Africa. A cross-sectional study comprising of 572 adults from four informal settlements in the Western Cape, South Africa was conducted. Participants completed a questionnaire adapted from the European Community Respiratory Health Survey, and the National Health and Nutrition Examination Survey questionnaire. Exposure estimates were previously modelled using Land-Use Regression for Particulate Matter (PM2.5) and Nitrogen Dioxide (NO2) at participants’ homes. The median age of the participants was 40.7 years, and 88.5% were female. The median annual NO2 level was 19.7 µg/m3 (interquartile range [IQR: 9.6–23.7]) and the median annual PM2.5 level was 9.7 µg/m3 (IQR: 7.3–12.4). Logistic regression analysis was used to assess associations between outcome variables and air pollutants. An interquartile range increase of 5.12 µg/m3 in PM2.5 was significantly associated with an increased prevalence of self-reported chest-pain, [Odds ratio: 1.38 (95% CI: 1.06–1.80)], adjusting for NO2, and other covariates. The study found preliminary circumstantial evidence of an association between annual ambient PM2.5 exposure and self-reported chest-pain (a crude proxy of angina-related pain), even at levels below the South African National Ambient Air Quality Standards.

scholarly journals Ambient Air Pollution and Respiratory Health in Sub-Saharan African Children: A Cross-Sectional Analysis

2021 ◽  
Vol 18 (18) ◽  
pp. 9729
Author(s):  
Yutong Cai ◽  
Harry Gibson ◽  
Rema Ramakrishnan ◽  
Mohammad Mamouei ◽  
Kazem Rahimi
Keyword(s):  
Air Pollution ◽  
Respiratory Health ◽  
Ambient Air ◽  
Household Wealth ◽  
Sub Saharan Africa ◽  
Ambient Air Pollution ◽  
Demographic And Health Surveys ◽  
Acute Lower Respiratory Infection ◽  
Cross Sectional ◽  
Sub Saharan

Ambient air pollution is projected to become a major environmental risk in sub-Saharan Africa (SSA). Research into its health impacts is hindered by limited data. We aimed to investigate the cross-sectional relationship between particulate matter with a diameter ≤ 2.5 μm (PM2.5) and prevalence of cough or acute lower respiratory infection (ALRI) among children under five in SSA. Data were collected from 31 Demographic and Health Surveys (DHS) in 21 SSA countries between 2005–2018. Prior-month average PM2.5 preceding the survey date was assessed based on satellite measurements and a chemical transport model. Cough and ALRI in the past two weeks were derived from questionnaires. Associations were analysed using conditional logistic regression within each survey cluster, adjusting for child’s age, sex, birth size, household wealth, maternal education, maternal age and month of the interview. Survey-specific odds ratios (ORs) were pooled using random-effect meta-analysis. Included were 368,366 and 109,664 children for the analysis of cough and ALRI, respectively. On average, 20.5% children had reported a cough, 6.4% reported ALRI, and 32% of children lived in urban areas. Prior-month average PM2.5 ranged from 8.9 to 64.6 μg/m3. Pooling all surveys, no associations were observed with either outcome in the overall populations. Among countries with medium-to-high Human Development Index, positive associations were observed with both cough (pooled OR: 1.022, 95%CI: 0.982–1.064) and ALRI (pooled OR: 1.018, 95%CI: 0.975–1.064) for 1 μg/m3 higher of PM2.5. This explorative study found no associations between short-term ambient PM2.5 and respiratory health among young SSA children, necessitating future analyses using better-defined exposure and health metrics to study this important link.

scholarly journals Ambient air pollution and cardiorespiratory outcomes amongst adults residing in four informal settlements in the Western Province of South Africa

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Herman Bagula ◽  
Toyib Olaniyan ◽  
Kees De Hoogh ◽  
Apolline Saucy ◽  
Martin Röösl ◽  
...  
Keyword(s):  
South Africa ◽  
Air Pollution ◽  
Informal Settlements ◽  
Ambient Air ◽  
Ambient Air Pollution ◽  
Western Province

Cross-sectional associations between ambient air pollution and respiratory signs and symptoms among young children in Tehran

2020 ◽  
Vol 223 ◽  
pp. 117268 ◽  
Author(s):  
Zahra Namvar ◽  
Masud Yunesian ◽  
Mansour Shamsipour ◽  
Mohammad Sadegh Hassanvand ◽  
Kazem Naddafi ◽  
...  
Keyword(s):  
Air Pollution ◽  
Young Children ◽  
Signs And Symptoms ◽  
Ambient Air ◽  
Ambient Air Pollution ◽  
Cross Sectional ◽  
Respiratory Signs And Symptoms

scholarly journals Ambient air pollution, traffic noise and adult asthma prevalence: a BioSHaRE approach

2016 ◽  
Vol 49 (1) ◽  
pp. 1502127 ◽  
Author(s):  
Yutong Cai ◽  
Wilma L. Zijlema ◽  
Dany Doiron ◽  
Marta Blangiardo ◽  
Paul R. Burton ◽  
...  
Keyword(s):  
Air Pollution ◽  
Noise Exposure ◽  
Traffic Noise ◽  
Ambient Air ◽  
Ambient Air Pollution ◽  
Asthma Prevalence ◽  
Pool Data ◽  
Cross Sectional ◽  
Adult Asthma ◽  
Logistic Regression Models

We investigated the effects of both ambient air pollution and traffic noise on adult asthma prevalence, using harmonised data from three European cohort studies established in 2006–2013 (HUNT3, Lifelines and UK Biobank).Residential exposures to ambient air pollution (particulate matter with aerodynamic diameter ≤10 µm (PM10) and nitrogen dioxide (NO2)) were estimated by a pan-European Land Use Regression model for 2007. Traffic noise for 2009 was modelled at home addresses by adapting a standardised noise assessment framework (CNOSSOS-EU). A cross-sectional analysis of 646 731 participants aged ≥20 years was undertaken using DataSHIELD to pool data for individual-level analysis via a “compute to the data” approach. Multivariate logistic regression models were fitted to assess the effects of each exposure on lifetime and current asthma prevalence.PM10 or NO2 higher by 10 µg·m−3 was associated with 12.8% (95% CI 9.5–16.3%) and 1.9% (95% CI 1.1–2.8%) higher lifetime asthma prevalence, respectively, independent of confounders. Effects were larger in those aged ≥50 years, ever-smokers and less educated. Noise exposure was not significantly associated with asthma prevalence.This study suggests that long-term ambient PM10 exposure is associated with asthma prevalence in western European adults. Traffic noise is not associated with asthma prevalence, but its potential to impact on asthma exacerbations needs further investigation.

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