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Introduction
Using evidence synthesis to support health research.
Additional affiliations
September 2014 - present
September 2003 - August 2014
January 1999 - June 2003
Publications
Publications (97)
Objectives: To provide an overview of the methodological considerations for conducting commercial smartphone health app reviews (mHealth reviews), with the aim of systematising the process and supporting high-quality evaluations of mHealth apps.
Design: Synthesis of our research team’s experiences of conducting and publishing various reviews of mHe...
Background
Virtual wards are being rapidly developed within the National Health Service in the UK, and frailty is one of the first clinical pathways. Virtual wards for older people and existing hospital at home services are closely related.
Methods
In March 2022, we searched Medline, CINAHL, the Cochrane Database of Systematic Reviews and medRxiv...
Objective
The COVID-19 pandemic increased the demand for rapid evaluation of innovation in health and social care. Assessment of rapid methodologies is lacking although challenges in ensuring rigour and effective use of resources are known. We mapped reports of rapid evaluations of health and social care innovations, categorised different approache...
Objective
Outpatient no-shows have important implications for costs and the quality of care. Predictive models of no-shows could be used to target intervention delivery to reduce no-shows. We reviewed the effectiveness of predictive model-based interventions on outpatient no-shows, intervention costs, acceptability, and equity.
Materials and Metho...
Background
The rapid identification and adoption of effective innovations in healthcare is a known challenge. The strongest evidence base for innovations can be provided by evidence synthesis, but this is frequently a lengthy process and even rapid versions of this can be time-consuming and complex. In the UK, the Accelerated Access Review and Acad...
Background:
There are several possible interventions for managing pressure ulcers (sometimes referred to as pressure injuries), ranging from pressure-relieving measures, such as repositioning, to reconstructive surgery. The surgical approach is usually reserved for recalcitrant wounds (where the healing process has stalled, or the wound is not res...
Background:
During the COVID-19 pandemic, there have been concerns regarding potential bias in pulse oximetry measurements for people with high levels of skin pigmentation. We systematically reviewed the effects of skin pigmentation on the accuracy of oxygen saturation measurement by pulse oximetry (SpO2) compared with the gold standard SaO2 measu...
Virtual wards are an area of rapid development within the National Health Service in the UK, and frailty has been selected as one of the first clinical pathways to be developed. This is in the context of existing longstanding hospital at home services in some areas. A rapid evidence synthesis was completed to guide the local healthcare system in th...
Background:
Indications for the use of negative pressure wound therapy (NPWT) are broad and include prophylaxis for surgical site infections (SSIs). Existing evidence for the effectiveness of NPWT on postoperative wounds healing by primary closure remains uncertain.
Objectives:
To assess the effects of NPWT for preventing SSI in wounds healing t...
Background
Pulse oximetry was widely used in hospitals and at home to monitor blood oxygen during the COVID-19 pandemic. There have been concerns regarding potential bias in pulse oximetry measurements for people with dark skin. We aimed to assess the effects of skin pigmentation on the accuracy of oxygen saturation measurement by pulse oximetry (S...
Background
The rapid identification and adoption of effective innovations in healthcare is a known challenge. The strongest evidence base for innovations can be provided by evidence synthesis, but this is frequently a lengthy process and even rapid versions of this can be time-consuming and complex. In the UK, the Accelerated Access Review and Acad...
Background The rapid identification and adoption of effective innovations in healthcare is a known challenge. The strongest evidence base for innovations can be provided by evidence synthesis, but this is frequently a lengthy process and even rapid versions of this can be time-consuming and complex. In the UK, the Accelerated Access Review and Acad...
Background
There is increasing demand for more rapid evaluation of innovation in health and social care, to support timely decision-making about service redesign. These pressures have increased during the COVID-19 pandemic. Making evaluations more rapid raises challenges in terms of ensuring rigour and the effective use of resources, but assessment...
Objective:
Adverse event (AE) monitoring is central to assessing therapeutic safety. The lack of a comprehensive framework to define and grade maternal and fetal AEs in pregnancy trials severely limits understanding risks in pregnant women. We created AE terminology to improve safety monitoring for developing pregnancy drugs, devices and intervent...
Background:
Pressure ulcers (also known as pressure injuries, pressure sores and bed sores) are localised injuries to the skin or underlying soft tissue, or both, caused by unrelieved pressure, shear or friction. Specific kinds of beds, overlays and mattresses are widely used with the aim of preventing and treating pressure ulcers.
Objectives:
T...
Background:
Leg ulcers are open skin wounds on the lower leg that can last weeks, months or even years. Most leg ulcers are the result of venous diseases. First-line treatment options often include the use of compression bandages or stockings.
Objectives:
To assess the effects of using compression bandages or stockings, compared with no compress...
The wound microbiome may play an important role in the wound healing process. We conducted the first systematic prognosis review investigating whether aspects of the wound microbiome are independent prognostic factors for the healing of complex wounds. We searched Medline, Embase, CINAHL and the Cochrane Library to February 2019. We included longit...
Background:
Indications for the use of negative pressure wound therapy (NPWT) are broad and include prophylaxis for surgical site infections (SSIs). Existing evidence for the effectiveness of NPWT on postoperative wounds healing by primary closure remains uncertain.
Objectives:
To assess the effects of NPWT for preventing SSI in wounds healing t...
Healing mechanisms are disrupted in complex wounds. Proteases may persist longer in non‐healing wounds. We sought to investigate whether protease activity, protease inhibitor activity or their combinations are independent prognostic factors for healing of complex wounds.
We searched MEDLINE, EMBASE, CINAHL and The Cochrane Library to March 2019. St...
Aim
To identify and synthesize the evidence for the effectiveness of psychosocial interventions to promote the healing, and/or reduce the occurrence of, foot ulceration in people with diabetes.
Methods
In March 2019 we searched CENTRAL, Medline, Embase and PsycInfo for randomized controlled trials of interventions with psychosocial components for...
Background:
Indications for the use of negative pressure wound therapy (NPWT) are broad and include prophylaxis for surgical site infections (SSIs). Existing evidence for the effectiveness of NPWT on postoperative wounds healing by primary closure remains uncertain.
Objectives:
To assess the effects of NPWT for preventing SSI in wounds healing t...
Background:
Surgical site infections (SSIs) are costly and associated with poorer patient outcomes. Intra-operative surgical site irrigation and intra-cavity lavage may reduce the risk of SSIs through removal of dead or damaged tissue, metabolic waste, and site exudate. Irrigation with antibiotic or antiseptic solutions may further reduce the risk...
Aim
To investigate whether ulceration, amputation and healing of foot ulcers in people living with diabetes are associated with psychosocial and behavioural factors.
Methods
We searched MEDLINE, Embase, PsychINFO, CINAHL and The Cochrane Library to March 2019 for longitudinal studies with multivariable analyses investigating independent associatio...
This is a protocol for a Cochrane Review (Intervention). The objectives are as follows: To evaluate the effects of balloon dilatation of the Eustachian tube in adults with obstructive Eustachian tube dysfunction.
Background:
Indications for the use of negative pressure wound therapy (NPWT) are broad and include prophylaxis for surgical site infections (SSIs). While existing evidence for the effectiveness of NPWT remains uncertain, new trials necessitated an updated review of the evidence for the effects of NPWT on postoperative wounds healing by primary cl...
Background:
Venous leg ulcers (VLUs) are a common type of complex wound that have a negative impact on people's lives and incur high costs for health services and society. It has been suggested that prolonged high levels of protease activity in the later stages of the healing of chronic wounds may be associated with delayed healing. Protease modul...
Background:
Traumatic wounds (wounds caused by injury) range from abrasions and minor skin incisions or tears, to wounds with extensive tissue damage or loss as well as damage to bone and internal organs. Two key types of traumatic wounds considered in this review are those that damage soft tissue only and those that involve a broken bone, that is...
Background:
Venous leg ulcers are open skin wounds on the lower leg which can be slow to heal, and are both painful and costly. The point prevalence of open venous leg ulcers in the UK is about 3 cases per 10,000 people, and many people experience recurrent episodes of prolonged ulceration. First-line treatment for venous leg ulcers is compression...
Background:
Surgical site infection (SSI) rates vary from 1% to 5% in the month following surgery. Due to the large number of surgical procedures conducted annually, the costs of these SSIs can be considerable in financial and social terms. Many interventions are used with the aim of reducing the risk of SSI in people undergoing surgery. These int...
This is a protocol for a Cochrane Review (Prognosis). The objectives are as follows: To determine whether protease activity is an independent prognostic factor for the healing of venous leg ulcers.
Background:
Surgical site infections (SSIs) are wound infections that occur after an operative procedure. A preventable complication, they are costly and associated with poorer patient outcomes, increased mortality, morbidity and reoperation rates. Surgical wound irrigation is an intraoperative technique, which may reduce the rate of SSIs through...
Background:
Burn wounds cause high levels of morbidity and mortality worldwide. People with burns are particularly vulnerable to infections; over 75% of all burn deaths (after initial resuscitation) result from infection. Antiseptics are topical agents that act to prevent growth of micro-organisms. A wide range are used with the intention of preve...
Background:
Pressure ulcers, also known as bedsores, decubitus ulcers and pressure injuries, are localised areas of injury to the skin or the underlying tissue, or both. Dressings are widely used to treat pressure ulcers and promote healing, and there are many options to choose from including alginate, hydrocolloid and protease-modulating dressing...
Background
Although primarily used for social networking and often used for social support and dissemination, data on social media platforms are increasingly being used to facilitate research. However, the ethical challenges in conducting social media research remain of great concern. Although much debated in the literature, it is the views of the...
Background:
Surgical site infection rates in the month following surgery vary from 1% to 5%. Due to the large number of surgical procedures conducted annually, the costs of these surgical site infections (SSIs) can be considerable in financial and social terms. Nasal decontamination using antibiotics or antiseptics is performed to reduce the risk...
This is a protocol for a Cochrane Review (Overview). The objectives are as follows: To present an overview of the effectiveness and safety of interventions delivered during the intra-operative period aimed at preventing surgical site infections in all populations under going surgery in operating theatre settings. © 2017 The Cochrane Collaboration....
This is a protocol for a Cochrane Review (Intervention). The objectives are as follows:
To assess the effects of (1) dressings and (2) topical agents for healing venous leg ulcers in any care setting and to rank treatments in order of effectiveness, with assessment of uncertainty and evidence quality.
Plain English summaryCochrane is the largest international producer of systematic reviews of clinical trial evidence. We looked for published evidence that reports where consumers (patients and the public) have been involved in Cochrane systematic reviews, and also in reviews published by other organisations.We found 36 studies that reported about...
This is a protocol for a Cochrane Review (Intervention). The objectives are as follows: To assess the effects of nasal decontamination on preventing surgical site infections (SSIs) in people who are S aureus carriers undergoing surgery, treated in any setting. © 2016 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.
Background:
Venous leg ulcers (VLUs) are open skin wounds on the lower leg that occur because of poor blood flow in the veins of the leg; leg ulcers can last from weeks to years, and are both painful and costly. Prevalence in the UK is about 2.9 cases per 10,000 people. First-line treatment for VLUs is compression therapy, but around 60% of people...
Clinical Question
Do antiseptics and antibiotics benefit surgical wounds healing by secondary intention (SWHSI)?
Bottom Line
No high-quality randomized clinical trials have addressed this question. Current evidence is limited and insufficient; it is uncertain whether treating SWHSI with antiseptics or antibiotics is beneficial.
Background:
We performed a systematic review to assess whether we can quantify the underreporting of adverse events (AEs) in the published medical literature documenting the results of clinical trials as compared with other nonpublished sources, and whether we can measure the impact this underreporting has on systematic reviews of adverse events....
Background
Serious concerns have emerged regarding publication bias or selective omission of outcomes data whereby negative results are less likely to be published than positive results. This has important implications for evaluations of adverse events because conclusions based on only published studies may not present a true picture of the number...
Objective To identify the main areas of uncertainty and subsequent research priorities to inform the ongoing debate around assisted dying.
Design Two-round electronic modified Delphi consultation with experts and interested bodies.
Setting and participants 110 groups and individuals interested in the subject of end-of-life care and/or assisted dyin...
Background: Pressure ulcers, also known as bedsores, decubitus ulcers and pressure injuries, are localised areas of injury to the skin or the underlying tissue, or both. A range of treatments with antimicrobial properties, including impregnated dressings, are widely used in the treatment of pressure ulcers. A clear and current overview is required...
Background:
Following surgery, incisions are usually closed by fixing the edges together with sutures (stitches), staples, adhesives (glue) or clips. This process helps the cut edges heal together and is called 'healing by primary intention'. However, a minority of surgical wounds are not closed in this way. Where the risk of infection is high or...
Background:
Medical professionals routinely carry out surgical hand antisepsis before undertaking invasive procedures to destroy transient micro-organisms and inhibit the growth of resident micro-organisms. Antisepsis may reduce the risk of surgical site infections (SSIs) in patients.
Objectives:
To assess the effects of surgical hand antisepsis...
BACKGROUND: Venous leg ulcers are a common and recurring type of complex wound. They can be painful, malodorous, prone to infection and slow to heal. Standard treatment includes compression therapy and a dressing. The use of protease-modulating treatments for venous leg ulcers is increasing. These treatments are based on some evidence that a propor...
This is the protocol for a review and there is no abstract. The objectives are as follows:
To assess the effects of (i) dressings and (ii) topical agents for healing pressure ulcers in any care setting. To rank treatments in order of effectiveness, with assessment of uncertainty and evidence quality.
A recent systematic review of treatments of Eustachian tube dysfunction commissioned by the UK NIHR Health Technology Assessment (HTA) Programme revealed that an important limitation with the available evidence is a lack of consensus on the definition and diagnosis of this disorder.1 The HTA report recommended that key to advancing research in this...
Protease-modulating matrix treatments for healing venous leg ulcers (Protocol)
This is a protocol for a Cochrane Review (Intervention). The objectives are as follows: To assess the effects and safety of antiseptics for the treatment of burns in any care setting.
AIMTo summarize the prevalence, frequency and comparative value of information on the adverse events of healthcare interventions from user comments and videos in social media.METHODS
Systematic review of assessments of the prevalence or type of information on adverse events in social media. 16 databases and two internet search engines were searched...
Foot ulcers in people with diabetes mellitus are a common and serious global health issue. Dressings form a key part of ulcer treatment, with clinicians and patients having many different types to choose from. A clear and current overview of current evidence is required to facilitate decision-making regarding dressing use.
To summarize data from sy...
This is a reprint of a Cochrane protocol, prepared and maintained by The Cochrane Collaboration and published in The Cochrane Library 2015, Issue 6 http://www.thecochranelibrary.com Antibiotics and antiseptics for surgical wounds healing by secondary intention (Protocol)
Background:
Venous leg ulcers are a common and recurring type of complex wound. They can be painful, malodorous, prone to infection and slow to heal. Standard treatment includes compression therapy and a dressing. The use of protease-modulating treatments for venous leg ulcers is increasing. These treatments are based on some evidence that a propo...
Background:
Pressure ulcers, also known as bedsores, decubitus ulcers and pressure injuries, are localised areas of injury to the skin or the underlying tissue, or both. A range of treatments with antimicrobial properties, including impregnated dressings, are widely used in the treatment of pressure ulcers. A clear and current overview is required...
Introduction Rhabdomyosarcoma (RMS) management depends on risk stratification at diagnosis and treatment response. Assessment methods include CT, MRI, bone scintigraphy, histological analysis and bone marrow biopsy. Advanced functional imaging (FI) has potential to improve staging accuracy and management strategies.
Methods and analysis We conduct...
Sir,We undertook a systematic review of the use of advanced functional imaging in the management of rhabdomyosarcoma in children and young people (age ≤24 years) [1]. Studies of PET, PET-CT or diffusion-weighted MRI were eligible for inclusion if they included ≥10 patients with histologically proven rhabdomyosarcoma. We identified two studies of PE...
Background
The grading of recommendation, assessment, development and evaluation (GRADE) approach is widely implemented in health technology assessment and guideline development organisations throughout the world. GRADE provides a transparent approach to reaching judgements about the quality of evidence on the effects of a health care intervention,...
Background:
Eustachian tube dysfunction (ETD) is the inability of the Eustachian tube (ET) to adequately perform at least one of its functions: to protect the middle ear from sources of disease, to ventilate the middle ear, and to help drain secretions away from the middle ear. There are a number of treatment options for ETD, but there is little c...
The Health Technology Assessment programme commissioned a wide-ranging review of treatments for adult Eustachian tube dysfunction. Treatments range from advice and observation and pharmacological treatments, to surgical options.
1) To assess the evidence for interventions for adults with a clinical diagnosis of Eustachian tube dysfunction, 2) to id...
Allergic asthma is a long-term disorder of the airways resulting from overexpression of immunoglobulin E (IgE) in response to environmental allergens. Patients with poorly controlled asthma are at high risk of exacerbations requiring additional treatment, including hospitalisations. Severe exacerbations are potentially life threatening. Guidelines...
The National Institute for Health and Clinical Excellence (NICE) invited the manufacturer of trastuzumab, Roche Pharmaceuticals, to submit evidence for the clinical and cost effectiveness of this drug for the treatment of advanced gastric cancer (aGC), as part of the Institute's single technology appraisal (STA) process. The Centre for Reviews and...
This paper presents a summary of the evidence review group (ERG) report into trastuzumab for the treatment of human epidermal growth factor receptor 2 (HER2)-positive metastatic adenocarcinoma of the stomach (mGC) or gastro-oesophageal junction. HER2 positivity is defined by immunohistochemistry (IHC)3+ or IHC2+/fluorescence in situ hybridisation (...