Alastair Leyland

Dr. Alastair Leyland

MRC/CSO Social and Public Health Sciences Unit, University of Glasgow, Glasgow G3 7HR, UK
orcid

Research Focus & Metrics

Academic Career Length

25Years (2002-Present)

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

Representative Publications

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9 December 2020 in Occupational and Environmental Medicine
Verified
Journal Article
Closed access
PDF file
MMMiriam Mutambudzi
Miriam Mutambudzi
CNClaire Niedzwiedz
Claire Niedzwiedz
EMEwan Beaton Macdonald
Ewan Beaton Macdonald
ALAlastair Leyland
Alastair Leyland
FMFrances Mair
Frances Mair
ALAlastair Leyland
Alastair Leyland
Objectives To investigate severe COVID-19 risk by occupational group. Methods Baseline UK Biobank data (2006–10) for England were linked to SARS-CoV-2 test results from Public Health England (16 March to 26 July 2020). Included participants were employed or self-employed at baseline, alive and aged <65 years in 2020. Poisson regression models were adjusted sequentially for baseline demographic, socioeconomic, work-related, health, and lifestyle-related risk factors to assess risk ratios (RRs) for testing positive in hospital or death due to COVID-19 by three occupational classification schemes (including Standard Occupation Classification (SOC) 2000). Results Of 120 075 participants, 271 had severe COVID-19. Relative to non-essential workers, healthcare workers (RR 7.43, 95% CI 5.52 to 10.00), social and education workers (RR 1.84, 95% CI 1.21 to 2.82) and other essential workers (RR 1.60, 95% CI 1.05 to 2.45) had a higher risk of severe COVID-19. Using more detailed groupings, medical support staff (RR 8.70, 95% CI 4.87 to 15.55), social care (RR 2.46, 95% CI 1.47 to 4.14) and transport workers (RR 2.20, 95% CI 1.21 to 4.00) had the highest risk within the broader groups. Compared with white non-essential workers, non-white non-essential workers had a higher risk (RR 3.27, 95% CI 1.90 to 5.62) and non-white essential workers had the highest risk (RR 8.34, 95% CI 5.17 to 13.47). Using SOC 2000 major groups, associate professional and technical occupations, personal service occupations and plant and machine operatives had a higher risk, compared with managers and senior officials. Conclusions Essential workers have a higher risk of severe COVID-19. These findings underscore the need for national and organisational policies and practices that protect and support workers with an elevated risk of severe COVID-19.

25 September 2020 in Journal of Epidemiology and Community Health
Verified
Journal Article
Open access
PDF file
CNClaire Niedzwiedz
Claire Niedzwiedz
MGMichael James Green
Michael James Green
MBMichaela Benzeval
Michaela Benzeval
DCDesmond Campbell
Desmond Campbell
PCPeter Craig
Peter Craig
SKSrinivasa Vittal Katikireddi
Srinivasa Vittal Katikireddi
Background There are concerns that COVID-19 mitigation measures, including the ‘lockdown’, may have unintended health consequences. We examined trends in mental health and health behaviours in the UK before and during the initial phase of the COVID-19 lockdown and differences across population subgroups. Methods Repeated cross-sectional and longitudinal analysis of the UK Household Longitudinal Study, including representative samples of over 27,000 adults (aged 18+) interviewed in four survey waves between 2015 and 2020. A total of 9748 adults had complete data for longitudinal analyses. Outcomes included psychological distress (General Health Questionnaire-12), loneliness, current cigarette smoking, use of e-cigarettes and alcohol consumption. Cross-sectional prevalence estimates were calculated and multilevel Poisson regression assessed associations between time period and the outcomes of interest, as well as differential associations by age, gender, education level and ethnicity. Results Psychological distress increased 1 month into lockdown with the prevalence rising from 19.4% (95% CI 18.7% to 20.1%) in 2017–2019 to 30.6% (95% CI 29.1% to 32.3%) in April 2020 (RR=1.3, 95% CI 1.2 to 1.4). Groups most adversely affected included women, young adults, people from an Asian background and those who were degree educated. Loneliness remained stable overall (RR=0.9, 95% CI 0.6 to 1.5). Smoking declined (RR=0.9, 95% CI=0.8,1.0) and the proportion of people drinking four or more times per week increased (RR=1.4, 95% CI 1.3 to 1.5), as did binge drinking (RR=1.5, 95% CI 1.3 to 1.7). Conclusions Psychological distress increased 1 month into lockdown, particularly among women and young adults. Smoking declined, but adverse alcohol use generally increased. Effective measures are required to mitigate negative impacts on health.

15 October 2019 in BMC Public Health
Verified
Journal Article
Open access
PDF file
APAmrit Purba
Amrit Purba
ALAlastair Leyland
Alastair Leyland
Background: Occupational stressors in police work increase the risk for officer mental health morbidities. Officers’ poor mental wellbeing is harmful to the individual, can affect professionalism, organisational effectiveness, and public safety. While the impact of operational stressors on officers’ mental wellbeing is well documented, no review has systematically investigated organisational stressor impacts. This study aimed to conduct a systematic review to assess the relationship between organisational stressors and police officer mental wellbeing.Methods: Systematic review conducted following PRISMA and Cochrane Collaboration guidelines. Literature search was undertaken from 1990 to May 2017 on four databases (EBSCOHOST Medline/SocINDEX/PsycINFO/OVID Embase) and grey literature. Included articles were critically appraised and assessed for risk of bias. Narrative and evidence syntheses were performed by specific mental health outcomes.Results: In total, 3571 results were returned, and 15 studies met the inclusion criteria. All included studies were published in English between 1995 and 2016, had cross-sectional study designs, spanned across four continents and covered 15,150 officers. Strong evidence of significant associations was identified for organisational stressors and the outcomes of: occupational stress, psychiatric symptoms/psychological distress, emotional exhaustion and personal accomplishment. The organisational stressors most often demonstrating consistently significant associations with mental health outcomes included lack of support, demand, job pressure, administrative/organisational pressure and long working-hours.Conclusions: This review is the first to systematically examine organisational stressors and mental health in police officers. Organisational stressors that can be targeted by interventions and policy changes to secure officer wellbeing, a healthy work environment, and benefits to the organisation and the public are identified.

20 April 2011 in Environmental Science & Technology
Verified
Journal Article
Open access
TWTobias Walser
Tobias Walser
ALAlastair Leyland
Alastair Leyland
DLDaniel J. Lang
Daniel J. Lang
SHStefanie Hellweg
Stefanie Hellweg
A cradle-to-grave life cycle assessment (LCA) is performed to compare nanosilver T-shirts with conventional T-shirts with and without biocidal treatment. For nanosilver production and textile incorporation, we investigate two processes: flame spray pyrolysis (FSP) and plasma polymerization with silver co-sputtering (PlaSpu). Prospective environmental impacts due to increased nanosilver T-shirt commercialization are estimated with six scenarios. Results show significant differences in environmental burdens between nanoparticle production technologies: The “cradle-to-gate” climate footprint of the production of a nanosilver T-shirt is 2.70 kg of CO2-equiv (FSP) and 7.67–166 kg of CO2-equiv (PlaSpu, varying maturity stages). Production of conventional T-shirts with and without the biocide triclosan has emissions of 2.55 kg of CO2-equiv (contribution from triclosan insignificant). Consumer behavior considerably affects the environmental impacts during the use phase. Lower washing frequencies can compensate for the increased climate footprint of FSP nanosilver T-shirt production. The toxic releases from washing and disposal in the life cycle of T-shirts appear to be of minor relevance. By contrast, the production phase may be rather significant due to toxic silver emissions at the mining site if high silver quantities are required.

6 February 2009 in Environmental Science & Technology
Verified
Journal Article
Open access
SHStefanie Hellweg
Stefanie Hellweg
ALAlastair Leyland
Alastair Leyland
RBRaffaella Bruzzi
Raffaella Bruzzi
AMArjen Meijer
Arjen Meijer
RRRalph K. Rosenbaum
Ralph K. Rosenbaum
TMThomas E. McKone
Thomas E. McKone
Neglecting health effects from indoor pollutant emissions and exposure, as currently done in Life Cycle Assessment (LCA), may result in product or process optimizations at the expense of workers’ or consumers’ health. To close this gap, methods for considering indoor exposure to chemicals are needed to complement the methods for outdoor human exposure assessment already in use. This paper summarizes the work of an international expert group on the integration of human indoor and outdoor exposure in LCA, within the UNEP/SETAC Life Cycle Initiative. A new methodological framework is proposed for a general procedure to include human-health effects from indoor exposure in LCA. Exposure models from occupational hygiene and household indoor air quality studies and practices are critically reviewed and recommendations are provided on the appropriateness of various model alternatives in the context of LCA. A single-compartment box model is recommended for use as a default in LCA, enabling one to screen occupational and household exposures consistent with the existing models to assess outdoor emission in a multimedia environment. An initial set of model parameter values was collected. The comparison between indoor and outdoor human exposure per unit of emission shows that for many pollutants, intake per unit of indoor emission may be several orders of magnitude higher than for outdoor emissions. It is concluded that indoor exposure should be routinely addressed within LCA.

9 June 2020 in Police Practice and Research
Verified
Journal Article
Open access
ALAlastair Leyland
Alastair Leyland
HHHannah Hale
Hannah Hale
KHKate Hunt
Kate Hunt
Police work can be stressful and demanding and can impact on employee wellbeing. This study aimed to understand mental health (MH) issues and risk factors for poor MH in officers and staff of the Police Service of Scotland (PSoS); and gather their ideas of workplace wellbeing interventions that are suitable for this workforce. Face-to-face/telephone interviews were conducted with 30 Superintendents and eight stakeholders, recruited throughout PSoS. Interview topics included: MH issues; health/health behaviours; employment; and potentially beneficial workplace interventions. A thematic analysis approach was adopted. High levels of occupational stress and anxiety, currently or in the past, were reported, as were experiences of PTSD, anxiety and depression. The main stressors reported were working hours, workload, culture, leadership and organisational change. Officers and staff recognised progress towards promoting and managing MH in the service but identified interventions, including training, counselling, and environmental workplace changes as needed to address mental health issues within police cultures.