In patients with post-acute sequelae of COVID-19 (PASC), depression has been associated with symptom severity, the duration since infection and ongoing functional impairment. However, the interconnections between these factors remain inadequately understood.

This study aimed to explore the roles of depressive symptoms in moderating and mediating the relationships between post-COVID-19 conditions and functional capacity.

The PERCEIVE study recruited 1794 participants from Victoria and Tasmania through online advertisements based on possible PASC for a cross-sectional study. Of these, 461 participated in the longitudinal study. Post-COVID-19 duration and symptoms were recorded, and depressive symptoms and functional capacity were self-reported using the 9-item Patient Health Questionnaire and the Duke Activity Status Index (DASI), respectively. The association of depression with functional capacity was explored using ordinary least squares (OLS) regression, with companion OLS models, Sobel-Goodman tests and 1000 bootstrap iterations to assess mediation. Longitudinal data were analysed to assess changes in functional capacity and depressive symptoms over time, with mediation analysis using mixed models to explore depression as a mediator.

Participants had a mean DASI score of 35 (SD 21). Fatigue (18%), shortness of breath (11%) and chest pain (6%) were common symptoms, with severe depression linked to fatigue (93%) and shortness of breath (66%). The severity of post-COVID-19 symptoms was associated with severe depression (β=6.31, 95% CI 5.42 to 7.21) and reduced functional capacity (β=–6.40, 95% CI –9.20 to –3.61), with depression mediating 36% of the association between post-COVID-19 symptom severity and functional capacity. PASC was associated with higher depression scores (β=2.06, 95% CI 1.15 to 2.97) and lower functional capacity (β=–3.99, 95% CI –6.21 to –1.77), with depression mediating 51% of the association between PASC and reduced functional capacity. The longitudinal analysis suggested that depression is associated with the relationship between PASC and changes in functional capacity over time (unstandardised estimate=–5.16, p

Depression plays a key role in exacerbating post-COVID-19 functional impairment. This observation underscores the need for targeted physical and mental health interventions to enhance long-term recovery for those with severe conditions.

Inequities in health status exist in New Zealand across the rural–urban spectrum. In parallel, rural–urban differences in health service utilisation vary by service type. Despite the New Zealand public health system being based on principles of universal access, equity and fairness, levels of health expenditure on rural and urban populations are not well understood. The purpose of the study is to undertake a rural–urban analysis of public health system expenditure, based on individual-level service utilisation and national pricing of health service events.

Individual-level service utilisation and pricing will be collated from national collection databases for all eligible users of publicly funded services. The analysis will include calendar years 2017–2024. Descriptive analysis and a two-part generalised linear regression model will be used to identify if rural–urban differences in expenditure exist, and what the association of rurality is with expenditure (if any). The model will also be used to identify geographic regions with expenditure levels that vary from those predicted using regression model weights. As the specific statistical approach will be determined by data attributes, this protocol outlines the intended approach to construct the analytical model.

Ethics approval was obtained from the University of Otago Human Research Ethics Committee (HD23/052). Māori consultation has been undertaken with the Ngāi Tahu Research Consultation Committee and will continue throughout the research process.

People without access to recognised and understood speech and/or written communication methods can experience exceptional disadvantage in health settings. This can result in poor health outcomes, lengthier hospital admissions and adverse events, including preventable deaths. Despite numerous attempts to integrate augmentative and alternative communication into health settings, the first-person ‘voice’ of the patient is often not accessible or prioritised, deferring instead to others, such as parents or carers, or the ‘best guess’ by healthcare professionals. The Talking Scrubs project aims to form a bridge to augmentative and alternative communication by locating key communication icons on scrubs (and scrubs/vest) to be used with patients (in and of themselves) and/or to prompt the use of patient individualised communication methods. The paper describes the methodological process for Stage 4 of the project. Prior stages involved investigating the concept, developing and validating instrument measures and co-designing and feasibility pilot testing the scrubs/vests. Stage 4 (this protocol) aligns with the diagnostic process, to test the feasibility and effectiveness of the scrubs intervention at two large, metropolitan medical centres with 5–10 general practitioners, approximately 30 patients and up to 10 flow-on diagnostic screening clinicians such as nurses and phlebotomists. Stage 4 is the first time the instrument measures will be applied and re-tested post-validation.

Using mixed methods, Stage 4 will apply the communication self-efficacy instruments co-designed in Stage 2 and validated in Stage 3 to measure effectiveness of the scrubs intervention by comparing pre-intervention and post-intervention changes in both clinician and patient population groups. Qualitative interviews, agency recorded data and participant journal recordings (optional) will be used to identify feasibility. SPSS V.29 (IBM, Chicago, Illinois, USA) will be applied to analyse participant communication self-efficacy measures and NVIVO V.10 (Lumiverso, Denver, Colorado, USA) to the retrieved qualitative data.

Stages 3 and 4 have ethics approval from the University of South Australia Ethics Committee identification number 206 930 and are registered as a clinical trial with Australia and New Zealand Clinical Research Trials (ANZCRT) with registration number 12625000490471p. Stage 1 (national survey) and Stage 2 (stakeholder focus groups) received ethics approval from Flinders University. Findings will be disseminated through national and international health translation platforms, publications, media and on the Talking Scrubs website.

ANZCRT with the registration number ACTRN12625000490471p.

The Clinical Frailty Scale is an ordinal scale from 1 (very fit) to 9 (terminally ill) commonly used to assess frailty in older patients. It is simple for clinicians to apply and can help identify patients who may benefit from discussions around end-of-life care. We externally validated the Scale to assess its performance for predicting 90-day mortality in a cohort of admitted older patients who had screened positive for being at risk of nearing the end of life.

We used data from a randomised controlled trial assessing a tailored feedback loop for reducing non-beneficial care. Our study included patients aged 75 and above admitted between May 2020 and June 2021 from 3 Australian hospitals. We assessed whether the Scale could be used in a frail population to identify patients who were at risk of short-term mortality. Predictive performance was assessed using the c-statistic, smoothed calibration curves and decision curves. Models were tested for coefficient stability.

Our dataset contained 4639 patients and 956 deaths within 90 days. The Clinical Frailty Scale had a c-statistic of 0.62 (95% CI 0.60 to 0.64) or 0.63 (95% CI 0.61 to 0.65) by adding age and transforming the Scale using a cubic spline. Risks were underestimated without a non-linear transformation as scores of 8 and 9 had a higher risk that diverged from a linear association. The net benefit of using the tool was greatest between 5 and 8 on the Scale.

The utility of the Clinical Frailty Scale may be as a flag to encourage clinicians to become more comfortable with discussing ageing and death, rather than as a highly discriminating model to classify patients as high risk or low risk. Statistical uncertainty over mortality should not be a barrier to initiating end-of-life care discussions with frail older patients.

Dementia is a chronic and progressive neurological condition characterised by cognitive and functional impairment. It is often associated with multimorbidity and imposes a significant economic burden on healthcare systems and families, especially in low-income and middle-income countries. In Peru, where dementia cases are increasing rapidly, timely detection and referral for diagnosis is crucial. This protocol is part of the IMPACT Salud project in Peru. Here, we focus on a specific component aimed at validating an mHealth tool for the detection of cognitive and functional impairment and assessing its cost-effectiveness. We will also assess changes in cognitive and functional impairment as well as health economic outcomes over 1 year.

This observational study will be conducted in four geographically diverse regions of Peru. Community health workers are expected to contact approximately 32 000 participants (≥60 years) to apply an mHealth-enabled tool that includes cognitive and functional instruments: Ascertain Dementia 8, Peruvian version of Rowland Universal Dementia Assessment Scale and Pfeffer Functional Activities Questionnaire. From this large sample, we aim to find 3600 participants and their study partners to enrol and interview at baseline regarding sociodemographic characteristics, lifestyles, comorbidities and health economic data including resource use, costs and health-related quality of life (HR-QoL). Psychologists, blind to previous results, will assess dementia stage of the participants using an abbreviated Clinical Dementia Rating (CDR) scale. At 6-month follow-up, participants will complete a brief health economics questionnaire on resource use, costs and HR-QoL. To validate the accuracy of the detection tool, a subsample of 600 participants who completed the baseline will undergo a gold-standard clinical neuropsychological assessment. This subsample will participate in a 12-month follow-up, including health economics, cognitive and functional impairment tests and the CDR scale. Results will be analysed and presented by cognitive status, site, sex and multimorbidity profile. Finally, data from all stages and external sources will inform a decision model to implement a cost-effectiveness analysis of the detection tool at the national level.

The study received ethics approval in Peru (Universidad Peruana Cayetano Heredia: CONSTANCIA-CIEI-378-33-23) and in the UK (Imperial College London: ICREC/SETREC reference number 6647445). Informed consent will be obtained from participants and their study partners, considering the participant’s capacity to consent. For illiterate participants, consent will be obtained through a witnessed procedure involving study partners, with a fingerprint obtained instead of a signature. The results will be disseminated through conferences, published articles, public presentations (particularly to those involved in dementia care) and presentations or meetings with local health authorities.

To evaluate the diagnostic accuracy of CT in identifying small and large bowel obstruction and associated complications, including ischaemia and perforation, in adult patients.

Systematic review and meta-analysis reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses of Diagnostic Test Accuracy reporting guidelines.

Ovid MEDLINE and Embase were searched from 1946 to 20 February 2025.

The study included randomised controlled trials, cohort studies and case–control studies evaluating the diagnostic accuracy of CT for bowel obstruction in adults (aged ≥18 years). Only studies published in English were included. Conversely, case reports, editorials, conference abstracts without full data and studies focusing exclusively on paediatric populations or animal models were excluded.

Three reviewers independently extracted data on study characteristics, CT modality, diagnostic accuracy metrics (sensitivity, specificity and predictive values) and complications. Risk of bias was assessed using the QUADAS-2 tool. A random-effects meta-analysis was conducted. Heterogeneity was assessed using I² and Tau² statistics.

Sixty-five studies with 9418 patients were included. The pooled sensitivity and specificity of CT for bowel obstruction were 90% (95% CI 78 to 96; I²=56%, Tau²=0.36) and 88.8% (95% CI 78.0 to 94.8; I²=65%, Tau²=0.35), respectively. For bowel ischaemia, CT showed a pooled sensitivity of 47.0% (95% CI 32.4 to 59.9; I²=0%, Tau²=0.00) and specificity of 85.3% (95% CI 77.9 to 89.5; I²=1%, Tau²=0.45). Multidetector CT (MDCT) outperformed older modalities across all endpoints. Ischaemia was present in 22.05% of all cases, with higher rates in small bowel obstruction. Perforation and mortality rates were 3.98% and 4.40%, respectively. No significant publication bias was detected, and the certainty of evidence was graded as moderate for most diagnostic accuracy outcomes.

CT, particularly MDCT, offers high diagnostic accuracy for bowel obstruction and is a critical tool for detecting serious complications such as ischaemia and perforation. However, sensitivity for ischaemia remains modest. Standardised protocols and prospective studies are needed to enhance early identification and optimise care pathways.

Studies suggest that extreme heat events can have negative effects on mental health. However, characterisation of these effects in urban communities remains limited, and few studies have investigated the potential modifying effects of demographic, clinical and environmental characteristics. The aim of this study is to address this knowledge gap and quantify the impacts of extreme heat on mental health, health service use and mental well-being in vulnerable urban populations.

In this multidisciplinary project, we will assess mental health outcomes in different populations by bringing together two distinct datasets: electronic health record (EHR) data on mental health service users and data from general public participants of Urban Mind, a citizen science project. We will use EHRs from the South London and Maudsley NHS Foundation Trust (SLaM) and the North London NHS Foundation Trust (NLFT), from six boroughs which collectively cover more than 1.8 million residents in Greater London, to capture mental health service use and mortality among people with existing diagnoses of mental illness across 2008–2023. We will use smartphone-based ecological momentary assessment data from Urban Mind to measure mental well-being in the general population (2018–2023). These datasets will be linked to high-resolution spatiotemporal data on temperature, fine and coarse particulate matter (PM_2.5, PM₁₀), nitrogen dioxide (NO₂), Normalised Difference Vegetation Index (NDVI) and density of large mature tree canopy. We will employ novel quasi-experimental designs, including case time series and case-crossover analysis, to examine the impact of extreme heat on mental health and explore effect modification by sociodemographic, clinical and environmental factors, including air pollution and types of green space coverage. We will also develop a microsimulation model combined with the InVEST urban cooling model to assess and forecast the mental health and social care impacts of extreme heat events and the mitigation of these impacts by different green space coverage and pollution-reduction policies. With a core team composed of researchers, community organisations, industry partners and specialist policy experts, this project will consider lived experience, benefit from broad stakeholder engagement and address gaps in policy and practice.

Each component of this project has been approved by the relevant ethics committee (ref RESCM-22/23-6905 for Urban Mind, LRS/DP-23/24-41409 for the co-development of a screening tool, 23/SC/0257 for the SLaM EHRs, and 24/EE/0178 for the NLFT EHRs). Our dissemination plan includes peer-reviewed scientific articles, policy briefs, a practical guide on fostering ecological and human resilience at the neighbourhood level, and a technical guide for planting and improving the growing conditions of large canopy trees.

Home-based physiotherapy is a current approach to manage knee osteoarthritis (OA). However, adherence to physiotherapy is poor. Non-immersive virtual reality (VR) has shown promise in improving self-efficacy and adherence in other clinical conditions. A non-immersive VR-based home physiotherapy system named Sensor-based Physiotherapy Intervention with Virtual Reality (SPIN-VR) for knee OA has been developed, integrating physiotherapy exercises into engaging games that adjust in difficulty based on real-time performance. This approach aims to enhance exercise adherence by making physiotherapy more enjoyable and personalised. To evaluate the feasibility of this intervention, a randomised controlled trial is being conducted.

This single-centre, open-label, randomised controlled feasibility trial will evaluate the SPIN-VR system over 12 weeks compared with usual care physiotherapy for knee OA. 50 participants will be randomly assigned to either the SPIN-VR or usual care group, with follow-ups at 12 and 24 weeks post randomisation. The primary outcomes will be a description of feasibility of recruitment, patient willingness to be randomised, the completeness of outcome measures and patient adherence to the intervention. Secondary outcomes include evaluations of muscle strength, endurance, aerobic capacity, exercise technique, central pain processing and self-reported pain mechanisms and moderators. Participants in the intervention arm will be interviewed after 12 weeks to capture their experience in using the VR system.

This protocol was approved by the Wales Research Ethics Committee 3. Research findings will be disseminated in open-access peer-reviewed journals, to researchers and health professionals through conference presentations, to patients and the public by organising webinars and a seminar.

NCT06639867.

The SupportBack 2 randomised controlled trial (RCT) compared the clinical and cost-effectiveness of an internet intervention supporting self-management versus usual primary care in reducing low back pain (LBP)-related disability. In this study, we aimed to identify and understand key processes and potential mechanisms underlying the impact of the intervention.

This was a nested qualitative process evaluation of the SupportBack 2 RCT (ISRCTN: 14736486 pre-results).

Primary care in the UK (England).

46 trial participants experiencing LBP without indicators of serious spinal pathologies (eg, fractures, infection) took part in telephone interviews at either 3 (n=15), 6 (n=14) or 12 months (n=17) post randomisation. Five physiotherapists who provided telephone support for the internet intervention also took part in telephone interviews.

An internet intervention ‘SupportBack’ supporting self-management of LBP primarily through physical activity and exercise delivered in addition to usual care, with and without physiotherapist telephone support.

Data were analysed thematically, applying a realist logic to develop context-mechanism-outcome configurations.

Four explanatory themes were developed, with five context-mechanism-outcome configurations. Where benefit was reported, SupportBack appeared to work by facilitating a central associative process where participants linked increases in physical activity or exercise with improvements in LBP, then continued to use physical activity or exercise as key regulatory strategies. Participants who reported little or no benefit from the intervention appeared to experience several barriers to this associative process, including negative expectations, prohibitive beliefs about the cause of LBP or functional limitations preventing engagement. Physiotherapists appeared to provide accountability and validation for some; however, the remote telephone support that lacked physical assessment was viewed as limiting its potential value.

Digital interventions targeting physical activity and exercise to support LBP self-management may rely on mechanisms that are easily inhibited in complex, heterogeneous populations. Future research should focus on identifying and removing barriers that may limit the effectiveness of digital self-management support for LBP.

Adolescence is a critical period marked by rapid brain development and the onset of many mental health disorders. Brain MRI studies during adolescence, especially when paired with behavioural phenotypes and information about genetic risk factors, hold promise to advance early identification of mental health risk and spur the creation of targeted treatments to improve patient function, prognosis and quality of life. However, prospective neuroimaging is costly and time-intensive, and individuals who participate may not be reflective of the general population. These challenges are compounded when examining adolescents, as many families lack the time, energy or resources to participate in studies that use research-grade imaging. Repurposing clinical MRIs obviates many of the challenges of neuroimaging research. Here, we describe the brain-behaviour-genetics study protocol. This protocol describes procedures used to recruit participants with recent high-quality clinical brain MRIs and prospectively acquire genetic and sociobehavioural data, resulting in a highly cost-efficient design that harnesses a vast and underused neuroscientific resource.

The brain-behaviour-genetics protocol aims to recruit 1000 adolescents who have clinical brain MRIs contained in Children’s Hospital of Philadelphia’s electronic health record. One or both parents of the adolescent proband will be recruited when possible. Parents and adolescents will complete a series of self-report scales spanning the domains of mental health, trauma, risk and resilience. Saliva samples will be collected from the adolescent and at least one biological parent, using an at-home saliva collection kit. Subsequent analysis will examine associations between brain development, genetics and behavioural measures in adolescence.

Approval for the study had been obtained from the Children’s Hospital of Philadelphia’s institutional review board (IRB #23–0 20 851). Results will be published in peer-reviewed journals.

(1) Analyse in depth an exemplar safety-critical task required of newly qualified doctors (prescribing insulin) and (2) Provide transferable insights into how undergraduate education could better educate medical students to meet the demands of practice when they become postgraduate trainees.

Document analysis of doctors’ reported experiences of insulin prescribing, an everyday task that has an emergent logic of practice and harms not just patients but (psychologically) new doctors. Application of third-generation (social emergence) complexity theory to explore why practice can be ‘mutually unsafe’.

A system of care comprising all five Northern Irish (UK) Health and Social Care Trusts, which together provide healthcare to a population of nearly two million people.

68 postgraduate year 1 and year 2 trainees (PGY1/2s), mainly PGY1s.

Thick description of new doctors’ contexts of action, reasons for acting and specific actions. We present this as a narrative compiling all 68 stories, 13 detailed exemplar stories and a diagram summarising how multiple factors interacted to make practice complex.

Situations that required PGY1/2s to act had interacting layers of complexity: (1) disease trajectories; (2) social dynamics between stakeholders and (3) contextual influences on stakeholders’ interactions. Out-of-hours working and unsuitable wards intensified troublesome contextual influences. All three individually complex layers ‘crystallised’ briefly to create ‘moments of action’. At best, PGY1/2s responded proactively, ‘stretched time’ and checked the results of their actions. At worst, PGY1/2s ‘played safe’ in unsafe ways (eg, took no action), acted on unsafe advice or defaulted to actions protecting them from criticism. Informal, pervasive rules emerged from, and perpetuated, unsafe practice.

New doctors’ work includes acting on indeterminate, emergent situations whose complexity defies rules that are determinate enough to be taught off the job. If new doctors are to perform capably in moments of action, medical students need ample, supervised, situated experience of what it is like to take responsibility in such moments.

To explore multiprofessional views about system-wide factors influencing (impeding or facilitating) the delivery of stroke mechanical thrombectomy (MT) services and/or improvements to this pathway in England.

A pragmatic exploratory qualitative study using online focus groups and semi-structured interviews with National Health Service (NHS) professionals and those working in a stroke strategic/policy lead role. We thematically analysed the data using the Framework Approach to understand participants’ views on the challenges to improving current and future MT implementation.

NHS trusts and other key stroke strategic/policy organisations covering 10 geographical regions in England and a national perspective.

A total of 29 professionals, working in an NHS clinical and managerial position and/or a stroke strategic national/regional clinical/policy lead role, participated in five focus groups and six individual semi-structured interviews between April and June 2024.

We identified five themes relating to MT implementation progress and challenges (1) workforce, (2) clinical care pathways, (3) service/system, (4) cross-cutting theme: communications and (5) cross-cutting theme: culture. Our analysis emphasised the increasing complexity and inter-related factors shaping the emergency stroke pathway for MT provision and a need to acknowledge key people-related, organisational and sociocultural factors during service planning.

Despite the challenges and complexity, professionals were optimistic that further progress would be made with MT delivery in England. However, ongoing improvement strategies are required, which also acknowledge wider cultural factors and system-wide relationships and are not just focused on care pathways and resources.

To evaluate an innovative approach to recruit 40 hospitals to a cluster randomised controlled trial (RCT) to improve discharge antibiotic prescribing.

This study describes the design, implementation and impact of a theory-informed recruitment approach for hospitals participating in the Reducing Overuse of Antibiotics at Discharge (ROAD) Home trial.

An inperson meeting of a quality improvement collaborative of acute care hospitals in the state of Michigan.

Representatives from acute care hospitals that are part of the Michigan Hospital Medicine Safety Consortium.

Small group recruitment sessions that combined deliberative participation and credible messengers to recruit hospitals to participate in a cluster RCT on a single date (1 November 2023).

The primary outcome was the number of hospitals which agreed to participate in the trial. We also assessed participant feedback, effectiveness of recruitment methods and resources required for implementation of this approach.

We recruited 51 (74%) of 69 eligible hospitals. Survey participants reported: sessions made clear the purpose of the trial (94%, 64/68) and time commitment required (87%, 59/68); agreed deliberative participation was helpful (82%, 56/68) and were ‘very satisfied’ with the session (82%, 56/68). Investigators largely reported credible messengers were a positive influence, though this varied across sessions. Hospital recruitment was time intensive, taking 179.5 total person hours. The recruitment process involved 3 months of preparation for the sessions and 2 months of follow-up prior to closing recruitment.

We demonstrated the feasibility and impact of a novel approach to recruit hospitals from an existing collaborative to a cluster RCT using the principles of deliberative participation and credible messengers. While the approach was time-consuming, we achieved success at over-recruiting hospitals in a relatively short period of time. Strategies presented here may assist future trial organisers in implementing hospital-based cluster RCTs.

The ROAD Home trial is registered on Clinical.Trials.gov (NCT06106204).