Publications by authors named "Xavier Griffin"

Article Synopsis
  • The study aimed to evaluate the impact of the UK MHRA's March 2019 Risk Minimisation Measures (RMM) on the usage of fluoroquinolones using interrupted time series (ITS) methods.
  • It analyzed monthly and quarterly fluoroquinolone usage data from various healthcare settings between 2012 and 2022, employing segmented regression and ARIMA models to assess changes across different age groups.
  • Results showed significant reductions in fluoroquinolone usage after the RMM implementation across multiple databases, but some statistical issues such as heteroscedasticity and non-normality were observed in hospital-level data.
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Objective: This study investigates patients' experiences of commencing weight-bearing after ankle fracture surgery and their recovery priorities to inform a new rehabilitation intervention.

Methods: Embedded within the Weight bearing in Ankle Fractures (WAX) trial, this qualitative study conducted semi-structured interviews with patients following ankle fracture surgery. The Behaviour Change Wheel (BCW) framework guided the interview questions to ensure comprehensive domain coverage.

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Patients who sustain a hip fracture are known to be at imminent refracture risk. Their complex multidisciplinary rehabilitation needs to include falls prevention and anti-osteoporosis medication (AOM) to prevent such fractures. This study aimed to determine which hospital-level organizational factors predict prescription of post-hip fracture AOM and refracture risk.

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Ankle fractures are common injuries that can significantly impact mobility and quality of life. Rehabilitation following ankle fracture treatment is crucial for recovery, yet adherence to regimens remains a challenge. Behaviour Change Techniques (BCTs) have been suggested to improve adherence, but their effectiveness in ankle fracture rehabilitation is not well established.

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Background: After surgery for a broken ankle, patients are usually instructed to avoid walking for 6 weeks (delayed weight-bearing). Walking 2 weeks after surgery (early weight-bearing) might be a safe and preferable rehabilitation strategy. This study aimed to determine the clinical and cost effectiveness of an early weight-bearing strategy compared with a delayed weight-bearing strategy.

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Objective: The objective of this study is to determine research priorities for the management of major trauma, representing the shared priorities of patients, their families, carers and healthcare professionals.

Design/setting: An international research priority-setting partnership.

Participants: People who have experienced major trauma, their carers and relatives, and healthcare professionals involved in treating patients after major trauma.

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Background: Pharmacological prophylaxis during hospital admission can reduce the risk of acquired blood clots (venous thromboembolism) but may cause complications, such as bleeding. Using a risk assessment model to predict the risk of blood clots could facilitate selection of patients for prophylaxis and optimise the balance of benefits, risks and costs.

Objectives: We aimed to identify validated risk assessment models and estimate their prognostic accuracy, evaluate the cost-effectiveness of different strategies for selecting hospitalised patients for prophylaxis, assess the feasibility of using efficient research methods and estimate key parameters for future research.

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Introduction: Cohort studies generate and collect longitudinal data for a variety of research purposes. Randomised controlled trials (RCTs) increasingly use cohort studies as data infrastructures to help identify and recruit trial participants and assess outcomes.

Objective: To examine the extent, range and nature of research using cohorts for RCTs and describe the varied definitions and conceptual boundaries for RCTs using cohorts.

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Aims: Ankle fracture is one of the most common musculoskeletal injuries sustained in the UK. Many patients experience pain and physical impairment, with the consequences of the fracture and its management lasting for several months or even years. The broad aim of ankle fracture treatment is to maintain the alignment of the joint while the fracture heals, and to reduce the risks of problems, such as stiffness.

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Aims: Is it feasible to conduct a definitive multicentre trial in community settings of corticosteroid injections (CSI) and hydrodilation (HD) compared to CSI for patients with frozen shoulder? An adequately powered definitive randomized controlled trial (RCT) delivered in primary care will inform clinicians and the public whether hydrodilation is a clinically and cost-effective intervention. In this study, prior to a full RCT, we propose a feasibility trial to evaluate recruitment and retention by patient and clinician willingness of randomization; rates of withdrawal, crossover and attrition; and feasibility of outcome data collection from routine primary and secondary care data.

Methods: In the UK, the National Institute for Health and Care Excellence (NICE) advises that prompt early management of frozen shoulder is initiated in primary care settings with analgesia, physiotherapy, and joint injections; most people can be managed without an operation.

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Objective: To determine the balance of costs, risks, and benefits for different thromboprophylaxis strategies for medical patients during hospital admission.

Design: Decision analysis modelling study.

Setting: NHS hospitals in England.

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Background: Healthcare system data (HSD) are increasingly used in clinical trials, augmenting or replacing traditional methods of collecting outcome data. This study, PRIMORANT, set out to identify, in the UK context, issues to be considered before the decision to use HSD for outcome data in a clinical trial is finalised, a methodological question prioritised by the clinical trials community.

Methods: The PRIMORANT study had three phases.

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Article Synopsis
  • Fractures of the calcaneus occur in about 2% of all fractures, primarily due to falls from heights, and treatment options include surgical and non-surgical methods, with ongoing debates about the best approach.
  • A Cochrane Review updated as of November 2022 assessed the pros and cons of surgical versus conservative treatments for displaced intra-articular calcaneal fractures in adults aged 14 and older, utilizing data from various medical databases.
  • The review analyzed data from 12 trials involving 1,097 participants, mostly males aged 28 to 52, focusing on outcomes like functional recovery, chronic pain, quality of life, and complications following treatment.
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Background: Hip fractures are devastating injuries causing disability, dependence, and institutionalisation, yet hospital care is highly variable. This study aimed to determine hospital organisational factors associated with recovery of mobility and change in patient residence after hip fracture.

Methods: A cohort of patients aged 60 + years in England and Wales, who sustained a hip fracture from 2016 to 2019 was examined.

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Background: Hip fracture care delivery varies between hospitals, which might explain variations in patient outcomes and health costs. The aim of this study was to identify hospital-level organisational factors associated with long-term patient outcomes and costs after hip fracture.

Methods: REDUCE was a record-linkage cohort study in which national databases for all patients aged 60 years and older who sustained a hip fracture in England and Wales were linked with hospital metrics from 18 organisational data sources.

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Background: Following hip fracture, people sustain an acute blood loss caused by the injury and subsequent surgery. Because the majority of hip fractures occur in older adults, blood loss may be compounded by pre-existing anaemia. Allogenic blood transfusions (ABT) may be given before, during, and after surgery to correct chronic anaemia or acute blood loss.

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Aims: A core outcome set for adult, open lower limb fracture has been established consisting of 'Walking, gait and mobility', 'Being able to return to life roles', 'Pain or discomfort', and 'Quality of life'. This study aims to identify which outcome measurement instruments (OMIs) should be recommended to measure each core outcome.

Methods: A systematic review and quality assessment were conducted to identify existing instruments with evidence of good measurement properties in the open lower limb fracture population for each core outcome.

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Open lower limb fracture is life-changing, resulting in substantial morbidity and resource demand, while inconsistent outcome-reporting hampers systematic review and meta-analysis. A core outcome set establishes consensus among key stakeholders for the recommendation of a minimum set of outcomes. This study aims to define a core outcome set for adult open lower limb fracture.

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Open lower limb fracture is a life-changing injury affecting 11.5 per 100,000 adults each year, and causes significant morbidity and resource demand on trauma infrastructures. This study aims to identify what, and how, outcomes have been reported for people following open lower limb fracture over ten years.

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Background: The morbidity and socioeconomic costs of fractures are considerable. The length of time to healing is an important factor in determining a person's recovery after a fracture. Ultrasound may have a therapeutic role in reducing the time to union after fracture by stimulating osteoblasts and other bone-forming proteins.

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Article Synopsis
  • Surgical inpatients face a serious risk of venous thromboembolism (VTE), which can be reduced through thromboprophylaxis but comes with cost and bleeding risks; risk assessment models (RAMs) help identify high-risk patients.
  • The study aimed to evaluate the cost-effectiveness of various thromboprophylaxis strategies for adult surgical inpatients, excluding those undergoing major orthopedic surgery or critical care.
  • Results indicated that providing thromboprophylaxis for all inpatients was the most cost-effective approach, with findings showing that better outcomes were linked to interventions targeting VTE complications, influenced by factors like patient age and VTE risk.
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Background: Post-traumatic osteoarthritis (PTOA) is a disabling complication of open reduction and internal fixation (ORIF) for acetabular fractures. There is a trend towards acute total hip arthroplasty (THA), 'fix-and-replace', in patients considered to have a poor prognosis and likelihood of PTOA. Controversy remains between early fix-and-replace, versus delayed THA as required after initial ORIF.

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