Jonathan Olsen

Dr. Jonathan Olsen

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Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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8 March 2021 in BMJ Open
Verified
Journal Article
Open access
PDF file
HBHannah Burnett
Hannah Burnett
JOJonathan Olsen
Jonathan Olsen
NNNatalie Nicholls
Natalie Nicholls
RMRichard Mitchell
Richard Mitchell
Objectives: Green space positively influences health and well-being; however, inequalities in use of green space are prevalent. Movement restrictions enforced due to the COVID-19 pandemic could have exacerbated existing inequalities regarding who visits green space. Therefore, this study aimed to explore how movement restrictions have changed the time spent visiting green space and experience of green space in the United Kingdom (UK) and how these differed by individual-level demographic characteristics. Design and outcome measures: A nationally representative cross-sectional survey administered through YouGov between 30 April and 1 May 2020. Data were collected on the time spent visiting green space and change in the experience of green space, including missing social interaction, increased physical activity and feeling greater mental health benefits in green space. Demographic information was collected on sex, age, ethnicity, social grade and dog ownership. Associations between specific outcome variables and predictors were assessed using logistic regression. Setting: UK, with population weights applied. Participants: 2252 adults aged 18 years and over. Results: Overall, 63% of respondents reported a decrease in time spent visiting green space following movement restrictions. Lower social grade respondents were less likely to visit green space before and after restrictions were enforced (OR: 0.35 (95% CI 0.24 to 0.51); OR: 0.77 (95% CI 0.63 to 0.95)). Female respondents were more likely than male respondents to agree that green space benefited their mental health more following restrictions (PP: 0.70 vs 0.59). Older (65+ years) respondents were less likely than middle-aged (25–64 years) respondents to have visited green space following the restrictions (OR: 0.79 (95% CI 0.63 to 0.98)). Conclusions: Inequalities in green space use were sustained, and possibly exacerbated, during movement restrictions. Our findings emphasise the importance of green spaces remaining open globally in any future ‘lockdowns’/pandemics. Further investigation is required to determine how visit patterns and experiences change through the different stages of the COVID-19 pandemic in the UK.

6 March 2016 in British Journal of Dermatology
Verified
Journal Article
Closed access
PDF file
JOJonathan Olsen
Jonathan Olsen
JGJ. Gallacher
J. Gallacher
AFA.Y. Finlay
A.Y. Finlay
VPV. Piguet
V. Piguet
NFN.A. Francis
N.A. Francis

2 December 2013 in Family Practice
Verified
Journal Article
Open access
PDF file
JOJonathan Olsen
Jonathan Olsen
JGJohn Gallacher
John Gallacher
VPVincent Piguet
Vincent Piguet
NFN. A. Francis
N. A. Francis
Molluscum contagiosum (MC) is a common skin condition that primarily affects children, a common reason for presenting in primary care and is commonly seen in children presenting with other conditions in primary and secondary care. It is usually asymptomatic but can present with pain, pruritus, erythema and bacterial superinfection. To synthesize the current epidemiology of MC. A systematic literature review of bibliographical databases on the prevalence, incidence, risk factors, age distribution and association with other conditions for MC in children. Data on the epidemiology of MC is largely of poor quality. The largest incidence is in children aged between 0 and 14 years, where the incidence rate ranged from 12 to 14 episodes per 1000 children per year. Incidence rates in the UK were highest in those aged 1–4 years. Meta-analysis suggests a point prevalence in children aged 0–16 years of between 5.1% and 11.5%. There is evidence for an association between swimming and having MC and MC is more common in those with eczema; however, there is little evidence for other risk factors. MC is a common condition, with the greatest incidence being in those aged 1–4 years. Swimming and eczema are associated with the presence of MC, but the causal relationships are unclear. There is a lack of data regarding the natural history of MC and published data are insufficient to determine temporal or geographic patterns in incidence, risk factors, duration of symptoms or transmission between family members.

1 April 2019 in Social Science & Medicine
Verified
Journal Article
Open access
JOJonathan Olsen
Jonathan Olsen
NNNatalie Nicholls
Natalie Nicholls
RMRichard Mitchell
Richard Mitchell
With more than half the world's population residing in urban areas and this proportion rising, it is important to understand how well-planned urban environments might improve, and reduce inequalities in, quality of life (QoL). Although studies suggest city-level characteristics hold independent influence on QoL, they generally lack a theoretically informed approach to understanding how the whole city landscape might be implicated, have paid scant attention to inequalities in QoL and often focus on small numbers of cities or countries. We applied theory and methods from landscape ecology to explore associations between cities' land cover/use, residents' reported life satisfaction and within-city socio-economic inequalities in life satisfaction. We joined individual-level responses to the European Urban Audit (EUA) Perception Surveys (2012, 2015) with city-level data from the European Urban Atlas classifying land cover/use into 26 different classes. Our sample included 63,554 people from 66 cities in 28 countries. Multilevel binary logistic models found that specific land use measures were associated with life satisfaction, including the amount of a city which was: residential (OR:0.991, 95%CI 0.984-0.997); isolated structures (OR:1.046, 95 CI 1.002-1.091); roads (OR:0.989, 95%CI 0.982-0.996); pastures (OR: 1.002, 95% CI 1.002-1.003) and herbaceous vegetation (OR:0.998, 95%CI 0.997-0.100). A more even distribution of land cover/use (β: 1.561, 95%CI -3.021 to -0.102) was associated with lower inequality in life satisfaction. This is the first study to theorise and examine how the entire urban landscape may affect levels of and inequalities in wellbeing in a large international sample. Our finding that more equal distribution of land cover/use is associated with lower levels of socio-economic inequality in life satisfaction supports the idea that city environments could be equigenic - that is, could create equality. Our findings can aid urban planners to develop and build cities that can contribute to improving, and narrowing inequalities in, residents' life satisfaction.

1 February 2015 in The Lancet Infectious Diseases
Verified
Journal Article
Closed access
JOJonathan Olsen
Jonathan Olsen
JGJohn Gallacher
John Gallacher
AFAndrew Finlay
Andrew Finlay
VPVincent Piguet
Vincent Piguet
NFNick A Francis
Nick A Francis

31 March 2022 in Land
Verified
Journal Article
Open access
PDF file
HBHannah Burnett
Hannah Burnett
JOJonathan Olsen
Jonathan Olsen
RMRichard Mitchell
Richard Mitchell
Green spaces have been found to promote physical activity, social contact, and mental wellbeing, however, there are inequalities in the use and experience of green spaces. The United Kingdom’s (UK) response to the COVID-19 pandemic imposed very substantial changes on its citizens’ lives which could plausibly affect their willingness to visit green spaces. These sudden lifestyle changes severely affected the population’s mental health, leading to a greater dependency on the positive influence of nature in reducing stress and improving mood. Whilst early cross-sectional evidence suggested an increased orientation to nature and visits to green spaces as a response to COVID-19 ‘lockdowns’, there is little longitudinal evidence about how sustained and equal these changes may have been. This study explored green space visits, barriers to visiting, and the inequalities of both of those over an entire year of the pandemic in the UK. Three waves of nationally representative cross-sectional surveys were administered by YouGov in April 2020, November 2020, and April 2021 (N = 6713). Data included reported visits to green spaces and, for those with no or infrequent visiting, perceived barriers including those plausibly related to the risk of COVID-19. Green space visits increased over the year as lockdown restrictions were relaxed; 68% of respondents reported green space visits in April 2021, compared with 49% in April 2020. However, the socio-economic inequalities in use were sustained and increased. COVID-19 related barriers fell over time, but there were indications of increased interest in green spaces among younger people. Further action is required to ensure that the positive impacts of green spaces are experienced equally, and that good quality green space is accessible to all.