Ravi Maheswaran

article

Neighbourhood greenspace influences on childhood obesity in Sheffield, UK

Meghann Mears, Paul Brindley, Ian Baxter, Ravi Maheswaran, more

Background One cause of childhood obesity is a reduction in the amount of unstructured time spent outdoors, resulting in less physical activity. Greenspaces have the potential to increase children's physical activity levels, so it is desirable to understand how to create spaces that promote visitation and activity. Objectives We investigate the relationship between rates of obesity at ages 4 to...

article

Alcohol outlet density and alcohol related hospital admissions in England: a national small‐area level ecological study

Ravi Maheswaran, Mark A. Green, Mark Strong, Paul Brindley, more

Addiction > 113 > 11 > 2051 - 2059

Background and aims Excessive alcohol consumption has a substantial impact on public health services. A key element determining alcohol availability is alcohol outlet density. This study investigated the relationship between on‐trade and off‐trade outlets and hospital admission rates in local neighbourhoods. Design National small‐area level ecological study. Setting and participants All 32 482...

article

Domestic gardens and self-reported health: a national population study

Paul Brindley, Anna Jorgensen, Ravi Maheswaran

International Journal of Health Geographics > 2018 > 17 > 1 > 1-11

Background There is a growing recognition of the health benefits of the natural environment. Whilst domestic gardens account for a significant proportion of greenspace in urban areas, few studies, and no population level studies, have investigated their potential health benefits. With gardens offering immediate interaction with nature on our doorsteps, we hypothesise that garden size will affect general...

article

Incidence, socioeconomic deprivation, volume-outcome and survival in adult patients with acute lymphoblastic leukaemia in England

Ravi Maheswaran, Nick Morley

BMC Cancer > 2018 > 18 > 1 > 1-7

Background We examined incidence and survival in relation to age, gender, socioeconomic deprivation, rurality and trends over time. We also examined the association between volume of patients treated by hospitals and survival. Methods Incident cases (2001–12) were identified using comprehensive National Health Service admissions data for England, with follow-up to March 2013. Socioeconomic deprivation...

article

Trends in alcohol-related admissions to hospital by age, sex and socioeconomic deprivation in England, 2002/03 to 2013/14

Mark A Green, Mark Strong, Lucy Conway, Ravi Maheswaran

BMC Public Health > 2017 > 17 > 1 > 1-15

Background Prevalence of alcohol-related harms in England are among the highest in Europe and represents an important policy issue. Understanding how alcohol-related trends vary by demographic factors is important for informing policy debates. The aim of our study was to examine trends in alcohol-related admissions to hospital in England, with a focus on variations by sex, age and socioeconomic deprivation...

article

Air pollution and stroke – an overview of the evidence base

Ravi Maheswaran

Spatial and Spatio-temporal Epidemiology > 2016 > 18 > C > 74-81

Air pollution is being increasingly recognized as a significant risk factor for stroke. There are numerous sources of air pollution including industry, road transport and domestic use of biomass and solid fuels. Early reports of the association between air pollution and stroke come from studies investigating health effects of severe pollution episodes. Several daily time series and case-crossover...

article

Acute effects of aircraft noise on cardiovascular admissions – an interrupted time-series analysis of a six-day closure of London Heathrow Airport caused by volcanic ash

Tim Pearson, Michael J Campbell, Ravi Maheswaran

Spatial and Spatio-temporal Epidemiology > 2016 > 18 > C > 38-43

Acute noise exposure may acutely increase blood pressure but the hypothesis that acute exposure to aircraft noise may trigger cardiovascular events has not been investigated. This study took advantage of a six-day closure of a major airport in April 2010 caused by volcanic ash to examine if there was a decrease in emergency cardiovascular hospital admissions during or immediately after the closure...

chapter

A Power-Enhanced Algorithm for Spatial Anomaly Detection in Binary Labelled Point Data Using the Spatial Scan Statistic

Simon Read, Peter Bath, Peter Willett, Ravi Maheswaran

Lecture Notes in Computer Science > Knowledge-Based and Intelligent Information and Engineering Systems > Intelligent Systems > 163-172

This paper presents a novel modification to an existing algorithm for spatial anomaly detection in binary labeled point data sets, using the Bernoulli version of the Spatial Scan Statistic. We identify a potential ambiguity in p-values produced by Monte Carlo testing, which (by the selection of the most conservative p-value) can lead to sub-optimal power. When such ambiguity occurs, the modification...

article

The impact of spatial and temporal availability of alcohol on its consumption and related harms: A critical review in the context of UK licensing policies

John Holmes, Yelan Guo, Ravi Maheswaran, James Nicholls, more

Drug and Alcohol Review > 33 > 5 > 515 - 525

IssuesReviews recommend controlling alcohol availability to limit alcohol‐related harm. However, the translation of this evidence into policy processes has proved challenging in some jurisdictions. ApproachThis paper presents a critical review of empirical spatial and temporal availability research to identify its features and limitations for informing alcohol availability policies. The UK is used...

article

GEOMED 2013 – From spatial analysis to public health practice

Ravi Maheswaran, Mark Strong

Spatial and Spatio-temporal Epidemiology > 2014 > 10 > Complete > 27-28

article

Assessing the impact of selective migration and care homes on geographical inequalities in health – A total population cohort study in Sheffield

Ravi Maheswaran, Tim Pearson, Mark Strong, Phil Clifford, more

Spatial and Spatio-temporal Epidemiology > 2014 > 10 > Complete > 85-97

Selective migration and moves to care homes may potentially contribute to observed socioeconomic gradients in mortality across cities and regions. Sheffield has striking socioeconomic gradients in area-level mortality across the city. We examined for evidence of selective migration and assessed the contribution of migration to observed mortality gradients. We used a total population cohort (539737...

article

Mapping gender variation in the spatial pattern of alcohol-related mortality: A Bayesian analysis using data from South Yorkshire, United Kingdom

Mark Strong, Tim Pearson, Ying C. MacNab, Ravi Maheswaran

Spatial and Spatio-temporal Epidemiology > 2012 > 3 > 2 > 141-149

Gender variation in the spatial pattern of alcohol-related deaths in South Yorkshire, UK for the period 1999 and 2003 was explored using two Bayesian modelling approaches. Firstly, separate models were fitted to male and female deaths, each with a fixed effect deprivation covariate and a random effect with unstructured and spatially structured terms. In a modification to the initial models, covariates...

article

Measuring the spatial accuracy of the spatial scan statistic

Simon Read, Peter Bath, Peter Willett, Ravi Maheswaran

Spatial and Spatio-temporal Epidemiology > 2011 > 2 > 2 > 69-78

The spatial scan statistic is well established in spatial epidemiology. However, studies of its spatial accuracy are infrequent and vary in approach, often using multiple measures which complicate the objective ranking of different implementations of the statistic. We address this with three novel contributions. Firstly, a modular framework into which different definitions of spatial accuracy can...

article

Inference from ecological models: Estimating the relative risk of stroke from air pollution exposure using small area data

Robert Haining, Guangquan Li, Ravi Maheswaran, Marta Blangiardo, more

Spatial and Spatio-temporal Epidemiology > 2010 > 1 > 2-3 > 123-131

Maheswaran et al. (2006) analysed the effect of outdoor modelled NO _x levels, classified into quintiles, on stroke mortality using a Poisson Bayesian hierarchical model with spatial random effects. An association was observed between higher levels of NO _x and stroke mortality at the small area (enumeration district) level.As this model is framed in an ecological perspective, the relative...

article

Bayesian modelling of environmental risk: example using a small area ecological study of coronary heart disease mortality in relation to modelled outdoor nitrogen oxide levels

Robert Haining, Jane Law, Ravi Maheswaran, Tim Pearson, more

Stochastic Environmental Research and Risk Assessment > 2007 > 21 > 5 > 501-509

Bayesian modelling of health risks in relation to environmental exposures offers advantages over conventional (non-Bayesian) modelling approaches. We report an example using research into whether, after controlling for different confounders, air pollution (NO_x) has a significant effect on coronary heart disease mortality, estimating the relative risk associated with different levels of exposure. We...

article

Use of Graph Theory to Identify Patterns of Deprivation and High Morbidity and Mortality in Public Health Data Sets

Peter A. Bath, Cheryl Craigs, Ravi Maheswaran, John Raymond, more

Journal of the American Medical Informatics Association > 2005 > 12 > 6 > 630-641

An important part of public health is identifying patterns of poor health and deprivation. Specific patterns of poor health may be associated with features of the geographic environment where contamination or pollution may be occurring. For example, there may be clusters of poor health surrounding nuclear power stations, whereas major roads or rivers may be associated with areas of poor health alongside...

article

The effect of alternative representations of population location on the areal interpolation of air pollution exposure

Paul Brindley, Stephen M. Wise, Ravi Maheswaran, Robert P. Haining

Computers, Environment and Urban Systems > 2005 > 29 > 4 > 455-469

Relatively new accurate commercial point databases incorporating population distribution are now available which could enhance areal interpolation estimates required for an underlying population. This paper explores the level to which results will be dependent on how well the underlying population is represented. Using a number of different levels of detail to represent the population distribution...

article

Population-based health indexes: a systematic review

Eva Kaltenthaler, Ravi Maheswaran, Catherine Beverley

Health policy > 2004 > 68 > 2 > 245-255

This paper presents a systematic review the literature pertaining to the development and use of population-based health indexes with regard to reason for development of the index, geographical level of aggregation, inclusion of health indicators, weighting, sources of data and validation. Any type of population-based health index that incorporated at least two health indicators was considered for...

INFONA - science communication portal

Search results for: Ravi Maheswaran

Neighbourhood greenspace influences on childhood obesity in Sheffield, UK

Alcohol outlet density and alcohol related hospital admissions in England: a national small‐area level ecological study

Domestic gardens and self-reported health: a national population study

Incidence, socioeconomic deprivation, volume-outcome and survival in adult patients with acute lymphoblastic leukaemia in England

Trends in alcohol-related admissions to hospital by age, sex and socioeconomic deprivation in England, 2002/03 to 2013/14

Air pollution and stroke – an overview of the evidence base

Acute effects of aircraft noise on cardiovascular admissions – an interrupted time-series analysis of a six-day closure of London Heathrow Airport caused by volcanic ash

A Power-Enhanced Algorithm for Spatial Anomaly Detection in Binary Labelled Point Data Using the Spatial Scan Statistic

The impact of spatial and temporal availability of alcohol on its consumption and related harms: A critical review in the context of UK licensing policies

GEOMED 2013 – From spatial analysis to public health practice

Assessing the impact of selective migration and care homes on geographical inequalities in health – A total population cohort study in Sheffield

Mapping gender variation in the spatial pattern of alcohol-related mortality: A Bayesian analysis using data from South Yorkshire, United Kingdom

Measuring the spatial accuracy of the spatial scan statistic

Inference from ecological models: Estimating the relative risk of stroke from air pollution exposure using small area data

Bayesian modelling of environmental risk: example using a small area ecological study of coronary heart disease mortality in relation to modelled outdoor nitrogen oxide levels

Use of Graph Theory to Identify Patterns of Deprivation and High Morbidity and Mortality in Public Health Data Sets

The effect of alternative representations of population location on the areal interpolation of air pollution exposure

Population-based health indexes: a systematic review

Filter options

Publication date

Publication type

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Ravi Maheswaran

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options