OP III – 5 Land use regression modelling of outdoor no2 and pm2.5 concentrations in three low-income areas of the urban western cape, south africa

Author(s):  
Apolline Saucy ◽  
Martin Röösli ◽  
Nino Künzli ◽  
Ming-Yi Tsai ◽  
Chloé Sieber ◽  
...  
2018 ◽  
Vol 610-611 ◽  
pp. 1439-1447 ◽  
Author(s):  
Sheena Muttoo ◽  
Lisa Ramsay ◽  
Bert Brunekreef ◽  
Rob Beelen ◽  
Kees Meliefste ◽  
...  

Author(s):  
Chloé Sieber ◽  
Martina S. Ragettli ◽  
Mark Brink ◽  
Olaniyan Toyib ◽  
Roslyn Baatjies ◽  
...  

In developing countries, noise exposure and its negative health effects have been little explored. The present study aimed to assess the noise exposure situation in adults living in informal settings in the Western Cape Province, South Africa. We conducted continuous one-week outdoor noise measurements at 134 homes in four different areas. These data were used to develop a land use regression (LUR) model to predict A-weighted day-evening-night equivalent sound level (Lden) from geographic information system (GIS) variables. Mean noise exposure during day (6:00-18:00) was 60.0 A-weighted decibels (dB(A)) (interquartile range 56.9-62.9 dB(A)), during night (22:00-6:00) 52.9 dB(A) (49.3-55.8 dB(A)) and average Lden was 63.0 dB(A) (60.1-66.5 dB(A)). Main predictors of the LUR model were related to road traffic and household density. Model performance was low (adjusted R2=0.130) suggesting that other influences than represented in the geographic predictors are relevant for noise exposure. This is one of the few studies on the noise exposure situation in low- and middle-income countries. It demonstrates that noise exposure levels are high in these settings.


Author(s):  
Chloé Sieber ◽  
Martina S. Ragettli ◽  
Mark Brink ◽  
Olaniyan Toyib ◽  
Roslyn Baatjies ◽  
...  

2018 ◽  
Vol 25 (6) ◽  
pp. 529-534 ◽  
Author(s):  
Colleen Jayne Saunders ◽  
Robyn Adriaanse ◽  
Abigail Simons ◽  
Ashley van Niekerk

IntroductionDrowning is a neglected public health threat in low-income and middle-income countries where the greatest drowning burden is observed. There is a paucity of drowning surveillance data from low-resource settings, particularly in Africa. Understanding local epidemiological factors will enable the development of context-specific drowning prevention initiatives and the appropriate allocation of resources.AimThe primary aim of this study was to describe the epidemiology of fatal drowning in the Western Cape, South Africa.MethodThis retrospective study describes fatal drowning incidents captured in the Western Cape vital registration system between 2010 and 2016. Data were obtained from the Forensic Pathology Services of the Western Cape Government. One-way analysis of variance was performed to detect a trend in mean drowning mortality rates between 2010 and 2016. χ2 tests for independence were performed to detect differences in the distribution of variables between groups.ResultsA total of 1391 fatal drownings occurred in the Western Cape between 2010 and 2016, with an age-adjusted drowning mortality rate of 3.2 per 100 000 population. Rates were fourfold higher in men compared with women. Children, particularly young children aged 0–4 years, and young adult men between 20 and 34 years of age were identified to be at high risk of fatal drowning. Drowning occurred predominantly in large, open bodies of water with concentrations in summer and public holidays.ConclusionsThe Western Cape drowning prevention strategy should prioritise interventions to reduce drowning in children and young adult men, with a targeted focus on festive periods such as public holidays.


2015 ◽  
Vol 15 (1) ◽  
Author(s):  
Anniza de Villiers ◽  
Nelia P. Steyn ◽  
Catherine E. Draper ◽  
Jillian Hill ◽  
Lucinda Dalais ◽  
...  

2020 ◽  
Vol 743 ◽  
pp. 140744 ◽  
Author(s):  
Tuo Shi ◽  
Yuanman Hu ◽  
Miao Liu ◽  
Chunlin Li ◽  
Chuyi Zhang ◽  
...  

2020 ◽  
Vol 226 ◽  
pp. 117395
Author(s):  
Amruta Nori-Sarma ◽  
Rajesh K. Thimmulappa ◽  
G.V. Venkataramana ◽  
Azis K. Fauzie ◽  
Sumit K. Dey ◽  
...  

Author(s):  
Sam Surka ◽  
Krisela Steyn ◽  
Katherine Everett-Murphy ◽  
Thomas A. Gaziano ◽  
Naomi Levitt

Background: South Africa currently faces an increasing burden of cardiovascular disease. Although referred to clinics after community screening initiatives, few individuals who are identified to be at high risk for developing cardiovascular disease attend. Low health literacy and risk perception have been identified as possible causes. We investigated the knowledge and perceptions about risk for cardiovascular disease in a community.Method: We conducted a series of focus group discussions with individuals from a low incomeperi-urban community in the Western Cape, South Africa. Different methods of presenting risk were explored. The data were organised into themes and analysed to find associations between themes to provide explanations for our findings.Results: Respondents’ knowledge of cardiovascular disease and its risk factors varied, but most were familiar with the terms used to describe cardiovascular disease. In contrast, understanding of the concept of risk was poor. Risk was perceived as a binary concept and evaluation of different narrative and visual methods of presenting risk was not possible.Conclusion: Understanding cardiovascular disease and its risk factors requires a different set of skills from that needed to understand uncertainty and risk. The former requires knowledge of facts, whereas understanding of risk requires numerical and computational skills. Without a better understanding of risk, risk assessments for cardiovascular disease may fail in this community.


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