Patient falls in hospitals lead to patient harm, staff distress and economic burden on health systems. There are few strategies with robust evidence demonstrating benefit for the prevention of falls, especially in acute hospital settings. Education and multicomponent fall prevention approaches are promising. Rigorous systematic measurement of implementation has been lacking in most hospital fall prevention trials. This paper describes the protocol for a trial that will evaluate the impact of supported implementation of tailored multicomponent fall prevention interventions on patient falls in hospital.

A stepped-wedge hybrid type I effectiveness implementation cluster randomised trial will be conducted. Twelve inpatient wards across four metropolitan hospitals will be enrolled in the trial, clustered into groups of four and randomised to commence the intervention at one of three time periods. Patients and ward staff will be recruited to complete pre-implementation surveys, which, combined with analysis of routinely collected local falls data and staff brainstorming, will inform tailored multicomponent fall prevention interventions for each ward. Wards will receive quality improvement training, clinical facilitation and staff education for at least 4 months to support implementation of their fall prevention interventions. The primary outcome—rate of falls—will be measured using routinely collected hospital falls data from the incident management system and medical records. Pre-implementation and post-implementation patient and staff surveys, qualitative interviews and bedside audits will measure secondary effectiveness and implementation outcomes. Healthcare utilisation from hospital data will inform the cost-effectiveness analysis.

The Sydney Local Health District Human Research Ethics Committee (RPAH Zone) approved this trial (protocol number X24-0087 and 2024/ETH00583). The trial is registered with the Australian and New Zealand Clinical Trials Registry (ACTRN12624000896572). Data collection commenced in October 2024, due for completion in May 2026. Results will be published in reputable international journals and presented at relevant conferences.

Australian and New Zealand Clinical Trials Registry (ACTRN12624000896572).

Administration of antibiotics before incising the skin (‘surgical antimicrobial prophylaxis’) is a critical infection prevention strategy in surgery. Extending doses of prophylaxis into the postoperative period is a common practice in cardiac surgery; however, the benefit has not been clearly established and may lead to emergence of antimicrobial resistance and patient harm. We present the protocol for a large international multicentre, adaptive, pragmatic, double-blind, three-arm, placebo-controlled, randomised, non-inferiority clinical trial to compare the incidence of surgical site infection after three different durations of postoperative surgical antimicrobial prophylaxis in patients undergoing cardiac surgery.

This adaptive, multi-arm multistage non-inferiority trial will compare intraoperative only (Arm A), to intraoperative and 24 hours (Arm B) and, to intraoperative and 48 hours (Arm C) of intravenous cefazolin and placebo as surgical antimicrobial prophylaxis in 9180 patients undergoing cardiac surgery. The adaptive design allows for potential dropping of any of the three arms if clear inferiority is indicated at any of the scheduled interim analyses. The trial will evaluate the clinical and cost-effectiveness of the three different antibiotic prophylaxis durations.

Ethics approval will be obtained at all participating sites. Results of the study will be submitted for publication in peer-reviewed journals and the key findings presented at national and international conferences. Patients and members of the public will also be involved in the dissemination and translation of the trial results.

NCT05447559.

Adolescent tobacco use (ATU) is a global public health concern, causing significant morbidity and premature death. This study aimed to assess trends in the prevalence of ATU in Indonesia between 2009 and 2019 and to identify factors contributing to the observed changes.

This study performed secondary data analysis of three consecutive waves (2009, 2014, and 2019) of the Indonesian Global Youth Tobacco Survey (IGYTS). Weighted prevalence estimates and complex survey data analysed using multivariate logistic regression were established across the three-wave surveys. A pooled IGYTS data set was explored to determine the risk factors of the ATU. A multivariate decomposition analysis (MDA) was used to determine factors contributing to the prevalence change in male adolescents over the last two surveys.

The prevalence of ATUs was 21.1% (38.2% in males; 6.4% in females), 18.6% (32.7% in males; 3.9% in females) and 19.8% (36.8% in males; 3.5% in females) for the three consecutive surveys, respectively. Being older adolescents, male, exposed to SHS (secondhand smoke) at home, tobacco industry promotion, not knowledgeable of the dangers of tobacco smoke and SHS, and against banning smoking in public places were associated with ATU consistently across the surveys. In addition, inadequate anti-cigarette media and not being knowledgeable of the difficulty of quitting smoking were also identified as risk factors in the pooled data. MDA showed that 88.94% of the explained change was due to differences in the composition of explanatory variables between the last two surveys.

This study suggests that social influence and tobacco industry promotion significantly impact ATU in Indonesia. Governments should emphasise these factors in their tobacco control interventions.

Traditional encounter-based analyses overlook downstream costs and complications that follow emergency department (ED) care. To enable more comprehensive evaluations, we developed standardised episode of care definitions for five common, high-cost conditions: chest pain, congestive heart failure (CHF), pneumonia, chronic obstructive pulmonary disease (COPD) and suicidality.

A two-round modified Delphi panel study was conducted following a literature review and evidence synthesis. Using structured surveys with anonymous feedback, panellists rated candidate criteria. To be retained in the final episode definitions, criteria were required to meet a predefined validity threshold without panellist disagreement. Data were analysed descriptively, and meeting deliberations were recorded and reviewed thematically.

Virtual, supported by an online survey platform.

A multidisciplinary panel of 11 experts in emergency medicine and relevant clinical specialties with 9 members participating in each round.

Criteria to determine inclusion, exclusion (including pre-trigger, post-trigger and event exclusion) and risk-adjustment standards for constructing ED-based episodes of care.

Candidate criteria were presented to the panel by condition: 30 for chest pain, 54 for CHF, 30 for COPD, 79 for pneumonia and 375 for suicidality. Following deliberations and re-rating, the number of valid criteria was reduced, primarily in the episode exclusion category. Thematic analysis highlighted trade-offs between episode exclusion criteria and the use of risk adjustment to account for heterogeneity.

Operational definitions for ED-based episodes of care for five conditions were established. These may support healthcare administrators, policymakers and researchers in evaluating variation in ED care delivery and its downstream cost and outcomes.

To explore how well the primary care system in Scotland works for adults with intellectual disabilities (ID), using the rate of unplanned hospital admissions for ambulatory care sensitive conditions (ACSC) as a proxy indicator. As part of this, to investigate those rates and rate ratios among adults with ID and without ID, adjusting for the prevalence of a given ACSC in each population. The secondary aim was to explore deaths due to ACSC among the ID and no-ID populations.

A population-based retrospective cohort data linkage study of adult respondents to Scotland’s 2011 Census. Self-reported or proxy-reported ID status from the Census was linked to hospital admissions data and deaths data. The cohort was followed until the end of 2019. The prevalence of ACSCs in each population was calculated from aggregate-level data published by the National Health Service, as it was not possible to use the linked dataset for this purpose.

Whole population of Scotland.

People aged 18+ on census day (27 March 2011), including all adults with ID (n=16 840) and a 15% randomly selected comparator sample of adults without ID (n=566 074).

Crude and age-sex standardised incidence rates and ratios; cumulative incidence; prevalence ratios. The exposure was ID status, and the outcomes were (1) unplanned ACSC hospital admission, (2) death with an ACSC condition listed as the main cause on the death certificate and (3) death with an ACSC condition listed as one of the causes on the death certificate.

Adults with ID under the age of 55 had only a slightly higher risk of an unplanned ACSC hospitalisation than their general population counterparts (standardised incidence ratio 1.11; 95% CI 1.03 to 1.20). After adjusting for different ACSC prevalence in ID and non-ID cohorts, this difference in risk disappeared. These findings contrast with existing evidence from England, where a much higher unadjusted risk of unplanned ACSC hospitalisations was found among people with ID. Adults with ID had a higher risk of dying due to ACSC than adults without ID (standardised mortality ratio 2.54; 95% CI 2.19 to 2.95).

Our findings on unplanned ACSC hospitalisations suggest that the primary care system in Scotland appears to be similarly effective for adults with ID than for adults without ID. However, the higher risk of dying from ACSC among people with ID suggests that this system is less effective for people with ID. Future research should investigate this tension and aim to understand why the operation of the primary healthcare system seems to be worse with regards to ACSC mortality than with regards to unplanned ACSC hospitalisations.

Previous reviews have investigated the relationship between empathy and burnout. However, these are now out of date, did not capture the effect of the pandemic, did not include healthcare professionals other than doctors and nurses or medical students, did not assess the impact of differences in profession and did not pool the data, which made estimating the strength of the association unclear. We therefore aim to address these shortcomings in an up-to-date, rigorous, systematic review and meta-analysis.

Findings will be reported in accordance with the Preferred Reporting Items for Systematic reviews and Meta-Analyses guidelines and flowchart.

We will search American Psychological Association (APA) PsycINFO, APA PsycArticles, Cumulative Index to Nursing and Allied Health Literature (CINAHL), The Cochrane Library, PubMed and Scopus. We will also search ResearchSquare and Social Science Research Network (SSRN) for preprints; ProQuest Dissertations and Theses and Electronic Theses Online Service for relevant theses. Forward and backward citation searches will identify additional studies. Two independent reviewers will screen titles, abstracts and full texts and extract data. Two independent reviewers will assess risk of bias using Risk of Bias 2 (RoB 2) for randomised controlled trials, Risk of Bias in Non-randomised Studies of Interventions (ROBINS-I) for non-randomised interventional studies and Risk of Bias in Non-randomised Studies of Exposures (ROBINS-E) for observational studies.

For all included studies, we will summarise the study characteristics, including number of participants; health profession, specialty and career stage; country and gender. If data are suitable, we will pool results and conduct subgroup analyses (including by health profession, career stage and clinical specialty). We will also explore the relationships between subscales of empathy and burnout. We will use metaregression to explore the impact of theoretically derived factors (such as study design and profession) on the strength of the association. Sensitivity analyses will assess the impact of low-quality research. In our discussion, we will summarise results, the limitations and provide a general interpretation of the results and implications.

Ethical approval is not required for this review, as primary data will not be collected. The review will be disseminated through peer-reviewed publication and presentation at conferences.

CRD420251075618.

To determine the prevalence and factors associated with pain-related disabilities among First Nations people living off-reserve in Canada in 2017.

Secondary analysis of the 2017 Aboriginal Peoples Survey, a cross-sectional survey of individuals living in private dwellings throughout Canada.

First Nations people living off-reserve aged 15 years and older (n=9115; weighted n=482 066).

Pain-related disabilities, defined as pain-related activity limitations lasting ≥6 months.

Overall, 22.1% (95% CI 20.9% to 23.4%) of First Nations people living off-reserve reported pain-related disabilities. Prevalence was higher among females (26.1%; 95% CI (24.3% to 28.0%)), increased with age (34.3%; 95% CI (30.3% to 38.5%) among those 45 to 54 years) and was similar across geographic areas (ranging from 21.0%; 95% CI (18.3% to 23.9%) to 22.5%; 95% CI (20.8% to 24.2%)). Pain-related disabilities increased with the number of coexisting disabilities (96.2%; 95% CI (94.3% to 97.5%) among those with >3 disabilities) and was highest among those reporting physical disabilities (ranging from 88.2%; 95% CI (85.6% to 90.4%) for those with mobility disabilities to 91.0%; 95% CI (88.6% to 92.9%) for those with disability related to flexibility). Regression models suggested that individuals with unmet basic needs, housing dissatisfaction, unmet healthcare needs, a history of mental health consultations, part-time or no employment, chronic conditions, residential school attendance or a low sense of belonging were more likely to report pain-related disabilities.

Pain-related disabilities are common among First Nations people living off-reserve, and their aetiology may be multifactorial. Continued collaboration with Indigenous partners is required to contextualise findings and to inform culturally responsive clinical and rehabilitation strategies.

Teenagers widely use digital devices for information sharing and other daily activities. Their heavy reliance on smartphones and tablets may contribute to repetitive-use injuries of the thumb.

This study aimed to investigate the prevalence of texting thumb (TT) among medical students and to identify the potential associations between TT and behavioural patterns during digital device use.

This cross-sectional study employed an online, self-developed questionnaire to assess demographic and behavioural patterns associated with smartphone use. Data on thumb pain and its features were evaluated for diagnostic purposes. This study comprised medical students from six medical schools in Jordan. Data were collected from 482 medical students, excluding those who did not meet the inclusion criteria.

The prevalence of TT was 34%, predominantly on the right side (53%) and at the thumb base (69%). The findings suggest that TT was significantly associated with specific behavioural patterns, including supporting the forearm (p=0.026, adjusted OR: 1.611; 95% CI 1.059 to 2.449), number of texting per day (p=0.005, adjusted OR: 1.319; 95% CI 1.086 to 1.603) and studying hours per day using a digital device (p=0.002, adjusted OR: 1.586; 95% CI 1.193 to 2.109). Also, students’ attitudes toward thumb pain were significantly associated with the TT (p=0.005, adjusted OR: 1.351; 95% CI 1.094 to 1.668).

Students’ attention to behavioural patterns is crucial when using digital devices. Supporting the forearm, limiting text message use, avoiding prolonged use of digital devices, never ignoring hand pain and resting the hand significantly reduce the risk of thumb overuse injury.

The REgulate your SItting Time (RESIT) is a tailored intervention targeting reductions and breaks in sitting in adults with type 2 diabetes mellitus (T2DM). A feasibility trial of RESIT had been conducted and the purpose of this paper is to report findings from the process evaluation.

A mixed-methods process evaluation within a randomised controlled feasibility trial.

The study was conducted remotely in the community.

Ambulatory individuals with T2DM aged 18–85 years.

A tailored intervention comprising an online education session, regular health coaching and technology for self-monitoring behaviour and prompting breaks in sitting.

Questionnaires (intervention participants n=22 at both 3 and 6 months; control participants n=21 at 3 months, n=29 at 6 months) and interviews (n=30, with n=13 intervention participants, n=12 control participants, n=5 health coaches) to assess perceptions of the intervention components, strategies and barriers for sitting less, the role of the study evaluation measures, and reasons for taking part.

The trial operated a largely successful online education element for those in the intervention group (82% completion; ≥76% engagement in individual educational elements). There was good use of self-monitoring and prompt technology (apps and wearables) with 73% of participants reporting using these at 6 months. Health coaching had high engagement and was perceived as enjoyable and useful. Data revealed strategies used for behaviour change (eg, active functional tasks) alongside barriers to change (eg, restrictions at work). There were also potential behavioural influences from the study evaluation measures (eg, activity measures increasing awareness and execution of behaviours) for both intervention and control participants.

A comprehensive process evaluation identified successful intervention elements (ie, online education, health coaching, wearables and smartphone apps) alongside strategies and barriers to behaviour change. These findings can inform future sedentary behaviour interventions for adults with T2DM and a definitive randomised controlled trial evaluating RESIT.

ISRCTN14832389.

According to the WHO, healthcare in Europe requires ‘systemic change through innovation’ if it is to respond to the demographic, epidemiological, environmental and technological challenges the region is facing. However, top-down methods of innovation in healthcare, driven by the macro levels of the system, have been struggling to impact the healthcare system at the scale that is required to drive meaningful and sustainable change. It has been widely acknowledged that frontline-led, employee-driven innovation will be the main driver to ensure that innovation in healthcare is human-centred and prioritises the needs of the patients.

This study protocol presents a research project designed to evaluate the experiences of frontline innovators supported by the Irish Health Service Executive’s HSE Spark Innovation programme. The purpose of this research is threefold. First, the findings will further strengthen the provision of support for frontline healthcare professionals, ensuring that they can continue to address the challenges they experience in providing care. Second, the research will provide insight into the structures required to support frontline innovation within the public healthcare sector, forming a starting point for other public sector organisations interested in establishing their own support system for frontline innovation. Finally, it will highlight the impact supporting frontline clinicians to innovate has on service users, staff and the wider healthcare organisation.

A qualitative research design, situated in a phenomenological framework, will be adopted for this research. ‘Participants’ in this study will include staff from the Irish public healthcare system who have obtained innovation support (either funding or human centred design support) from HSE Spark. The participants will be invited to share their experiences of the innovation support they received from HSE Spark, as well as their understanding of the impact of this support on their professional development, their service and the wider healthcare organisation. A stratified purposive sampling approach will be used to ensure the sample provides information-rich representations of individuals’ experiences engaging innovation initiatives supported by HSE Spark. One-to-one, semistructured interviews will be conducted with participants. Transcripts from these interviews will be analysed through a thematic approach, using the data analysis software NVivo. Themes will be derived from the data and used to understand the healthcare professionals’ experiences of engaging with innovation projects and with the support provided to them by HSE Spark. These themes will be used to identify the unspoken needs of innovators within healthcare, the support they need to continue innovating in this sector, and the impact supporting frontline innovation has on the service users, staff and the healthcare organisation.

We used the Standards for Reporting Qualitative Research (SRQR) reporting guideline to draft this manuscript, and the SRQR reporting checklist when editing.

Ethics approval for this study has been obtained from HSE Regional Ethics Committee (No. 20251650-RDMLRREC) and Maynooth University Social Sciences Research Committee (Approval Number: SRESC-2025-40031). Dissemination of results will be via journal articles, conference presentations and proceedings. Study findings will be disseminated in peer-reviewed journals and through conference presentations. Lay summaries of the findings will also be prepared for distribution in internal Irish Health Service publications. Other dissemination activities include the preparation of a book of case studies and key findings on the challenges of integrating human-centred design into public services, to be presented to the Irish Department of Public Expenditure and Reform.

The Optimising older People’s Transition from acute care Into residential aged care through Multidisciplinary Assessment and Liaison (OPTIMAL) trial is a multisite hybrid type II stepped wedge randomised controlled trial with an embedded process evaluation that aims to evaluate the effectiveness of implementing a bundle of evidence-based interventions to provide systematic support to older adults being discharged from hospital to residential aged care (RAC) homes for the first time. The trial is based on evidence from models of care used internationally to improve the quality of care transitions and addresses a need to provide evidence of transferability and effectiveness of these models in the Australian context. The embedded process evaluation will assess the acceptability, appropriateness, feasibility, adoption and fidelity of the OPTIMAL intervention, as well as the mechanisms of impact.

The OPTIMAL trial will be implemented across the three metropolitan local health networks (LHNs) in South Australia. The process evaluation will be conducted in parallel with the main trial and is theoretically informed by the integrated Promoting Action on Research Implementation in Health Services (i-PARIHS) implementation framework, which theorises that the implementation success of OPTIMAL is determined by the facilitation of the intervention with the intended recipients in their inner and outer contextual setting. The process evaluation will employ a mixed methods approach. Qualitative and quantitative data will be collected through baseline context mapping of LHNs, interviews with key LHN and RAC stakeholders, online survey of clinical teams, fortnightly check-in forms, and activity logs and field notes maintained by the nurse facilitator in each LHN. Data will be mapped and reported based on the i-PARIHS framework.

Ethical approval for the OPTIMAL trial was obtained from the Southern Adelaide Clinical Human Research Ethics Committee (approval 2023/HRE00111), and the relevant governance approvals were obtained for each participating LHN. Ethical approval includes a waiver of the requirement for consent for routinely collected patient data. Study findings will be disseminated via journal publications, presentations at conferences, stakeholder discussions, consumer forums and advocacy to key decision makers to support knowledge translation.

Australia New Zealand Clinical Trial Registry, ACTRN12624001008516, registered 20 August 2024.

Poor sleep is common among patients with heart failure (HF) and is associated with adverse cardiovascular outcomes. The utility of actigraphy in sleep assessment, especially among older adults, remains underexplored. This study aimed to assess sleep health among older adults with HF using actigraphy and explore associations between sleep parameters and cardiac biomarkers, functional performance and quality of life (QoL).

A cross-sectional study.

The study was conducted at an outpatient HF clinic within a tertiary cardiology service in a National Health Service hospital in the UK between March and October 2023.

A total of 150 older adults aged ≥65 years with a diagnosis of HF were enrolled.

Participants were given a wrist-accelerometer to wear for 7 days. On Day 0, patients completed a 4-metre walk test (4MWT), handgrip strength test (HGST), Timed Up and Go test (TUGT), Barthel Index (BI), Kansas City Cardiomyopathy Questionnaire (KCCQ-12) and frailty assessment (Clinical Frailty Scale, CFS). Subsequently, they were fitted with an accelerometer, with the device configured to start recording the following day (Day 1). Sleep outcomes were calculated after a 7-day wear period and averaged across valid nights (minimum 3 nights of recording, noon-to-noon with ≥16 hours wear-time). Sleep parameters studied include average sleep efficiency, sleep period time window, sleep duration, sleep onset and wake up time, wake after sleep onset (WASO), sleep interruptions and Sleep Regularity Index (SRI). Inefficient sleep was defined as sleep efficiency

The primary outcome measure was sleep efficiency; all other sleep parameters were classified as secondary or exploratory outcomes.

Accelerometry data from 145 participants were analysed; 42% had inefficient sleep based on average sleep efficiency across valid nights. These patients had significantly higher plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels (p=0.044). No statistically significant difference was noted in 4MWT, HGST, TUGT, BI, KCCQ-12 and CFS between patients with sleep efficiency

Older adults with HF who had inefficient sleep had significantly higher NT-proBNP levels. Lower sleep efficiency was associated with higher functional dependence and frailty. Sleep irregularity was linked to HF symptom load, frailty, functional performance and QoL, while sleep fragmentation was associated with impaired gait speed.

Falls represent the most frequent reason older people are admitted to hospital and significantly increase the likelihood of functional decline, healthcare utilisation and early mortality. The aim of this study is to comprehensively delineate the burden of falls amongst community-dwelling older people in Ireland.

Population-representative analysis of Wave 6 of the Irish Longitudinal Study on Ageing (TILDA) estimating incidence of falls requiring medical attention and emergency department (ED) attendance, fractures and fear of falling over 12 months. Additional data detailing falls-risk increasing drugs (FRIDs) and prior falls were also analysed.

Using Central Statistics Office Census 2022, the population of older people in Ireland was multiplied by the proportion of TILDA participants with each outcome of interest to yield population-level estimates.

Population-representative sample of 2299 (55% female) community-dwelling people in Ireland aged ≥70 years.

Almost 12% (proportion 0.12 (95% CI 0.10 to 0.13)) of participants, corresponding to almost 62 000 older people in Ireland, reported a fall requiring medical attention in 12 months, with 6% (proportion 0.06 (95% CI 0.05 to 0.07)), or over 32 000 people, attending ED due to a fall. Over 3% (proportion 0.03 (95% CI 0.03 to 0.04)) reported sustaining a fracture. Almost half of participants reporting a fall requiring medical attention were prescribed FRIDs, and over half had also reported a fall when assessed at the prior wave of the study (ie, 2 years ago).

The burden of falls amongst community-dwelling older people is considerable; 1 in 8 required medical attention for a fall and 1 in 16 attended the ED with falls over 12 months.

Currently, there is no national falls strategy in Ireland. These findings, alongside our ageing population, underscore the need for strengthened falls-prevention strategies to reduce avoidable morbidity and healthcare utilisation.

Outward medical tourism is when people seek medical treatment in a different country to the one they live in. We aimed to identify all studies that describe the impact on the UK National Health Service (NHS) of patients who require treatment due to outward medical tourism for elective surgery and report on complications, costs and benefits.

A rapid literature review. Medical and grey literature databases were searched, limited to literature published between 2012 and 2024.

Studies published in the English language, conducted in any NHS setting, describing complications, costs or benefits due to outward medical tourism for elective surgery were included. We excluded emergency and semi-urgent surgery, dental and transplant surgery, cancer treatment and fertility treatment.

Primary outcomes were costs and savings to the NHS. Secondary outcomes were type and frequency, demographics, procedures, complications, treatment, follow-up care and use of NHS resources. Results were summarised narratively. Study quality was assessed using JBI critical appraisal tools and the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used for certainty of evidence for costs.

Some 35 case series and case reports and two surveys of NHS plastic surgeons were identified. Case studies described 655 patients treated in specific NHS hospitals between 2006 and 2024 for postoperative complications due to metabolic/bariatric surgery (n=385), cosmetic (n=265) and ophthalmic (n=5) surgery tourism. No cases relating to other surgical specialities were identified in the literature. Most patients were women (90%), with an average age of 38 (range 14–69) years. The most common destination for surgery was Turkey (61%). Complications were not well described for metabolic/bariatric surgery tourism; but for cosmetic surgery tourism, infection and wound dehiscence were most commonly reported. There was evidence that some patients needed complex treatment involving long hospital stays and multiple surgical interventions. Very low certainty evidence indicated that costs to the NHS from outward medical tourism for elective surgery ranged from £1058 to £19 549 per patient in 2024 prices. We found no studies that reported on the benefits of outward medical tourism.

A systematic approach is needed to collecting information on the number of people who travel abroad for elective surgery and the frequency and impact on the UK NHS of treating complications. Without these data, we cannot fully understand the risk of seeking surgery abroad.