Publications by authors named "Tharmanathan P"

Background: Dupuytren's contracture is caused by nodules and cords which pull the fingers towards the palm of the hand. Treatments include limited fasciectomy surgery, collagenase injection and needle fasciotomy. There is limited evidence comparing limited fasciectomy with collagenase injection.

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Article Synopsis
  • - The study compares the effectiveness of two treatments for Dupuytren's contracture: collagenase injection and limited fasciectomy, using a randomized controlled trial with 672 participants
  • - The main measurement tool used was the Patient Evaluation Measure-Hand Health Profile (PEM), where scores range from 0 to 100, with higher scores indicating worse hand health; results showed a mean score of 17.8 for the collagenase group and 11.9 for the limited-fasciectomy group at 1 year
  • - The findings concluded that collagenase injection was not as effective as limited fasciectomy after one year, with fewer complications reported in the collagenase group (1.8%) compared to the limited-fasc
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  • A study investigated the potential benefits of methotrexate, an antirheumatic drug, in treating knee osteoarthritis (KOA) pain through a multicenter, double-blind, placebo-controlled trial involving 207 participants.
  • Participants were randomly assigned to receive either methotrexate or a placebo for 12 months while continuing their usual pain relief medications, with a primary focus on assessing average knee pain at 6 months.
  • Results indicated that the methotrexate group experienced a significant decrease in knee pain compared to the placebo group, suggesting methotrexate may provide symptomatic relief for KOA.
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Background: There is increasing interest in the capacity of adaptive designs to improve the efficiency of clinical trials. However, relatively little work has investigated how economic considerations - including the costs of the trial - might inform the design and conduct of adaptive clinical trials.

Methods: We apply a recently published Bayesian model of a value-based sequential clinical trial to data from the 'Hydroxychloroquine Effectiveness in Reducing symptoms of hand Osteoarthritis' (HERO) trial.

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  • Acute leukaemias (AL) are severe blood cancers that can be treated with intensive chemotherapy, but this also increases the risk of serious infections, particularly invasive fungal infections (IFIs), due to low white blood cell counts (neutropenia).
  • Current guidelines suggest using antifungal agents as a preventive measure in high-risk patients, but there's a significant issue of overprescribing these medications. Biomarkers like galactomannan and β-D-glucan could improve the diagnosis of IFIs when used together rather than separately.
  • The BioDriveAFS study is a large clinical trial involving 404 participants that will compare a biomarker-based antifungal management strategy to traditional antifungal prophyl
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Background: Proximal humerus fractures (PHF) are common and painful injuries, with the majority resulting from falls from a standing height. As with other fragility fractures, its age-specific incidence is increasing. Surgical treatment with hemiarthroplasty (HA) and reverse shoulder arthroplasty (RSA) have been increasingly used for displaced 3- and 4-part fractures despite a lack of good quality evidence as to whether one type of arthroplasty is superior to the other, and whether surgery is better than non-surgical management.

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Background: RCTs often face issues such as slow recruitment, poor intervention adherence and high attrition, however the 2020/2021 COVID-19 pandemic intensified these challenges. Strategies employed by the DISC trial to overcome pandemic-related barriers to recruitment, treatment delivery and retention may be useful to help overcome routine problems.

Methods: A structured survey and teleconference with sites was undertaken.

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Background: Screening with low-dose computed tomography (LDCT) reduces lung cancer mortality; however, the most effective strategy for optimising participation is unknown. Here we present data from the Yorkshire Lung Screening Trial, including response to invitation, screening eligibility and uptake of community-based LDCT screening.

Methods: Individuals aged 55-80 years, identified from primary care records as having ever smoked, were randomised prior to consent to invitation to telephone lung cancer risk assessment or usual care.

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An economic evaluation alongside the Hydroxychloroquine Effectiveness in Reducing symptoms of hand Osteoarthritis (HERO) trial was undertaken to assess the cost-effectiveness of hydroxychloroquine compared with placebo for symptomatic treatment of hand osteoarthritis for patients with at least moderate hand pain and inadequate response to current therapies. A trial-based cost-utility analysis was undertaken from the perspective of the UK National Health Service and Personal Social Services over a 12-month time horizon, using evidence from 248 participants included in the HERO trial, conducted in England. Patient-level data were collected prospectively over a 12-month period, using participant-completed questionnaires and investigator forms, to collect healthcare utilisation, costs and quality-adjusted life years (QALYs) using the EQ-5D-5L.

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Background: Dupuytren's contracture is a fibro-proliferative disease of the hands affecting over 2 million UK adults, particularly the white, male population. Surgery is the traditional treatment; however, recent studies have indicated that an alternative to surgery-collagenase clostridium histolyticum (collagenase)-is better than a placebo in the treatment of Dupuytren's contracture. There is however no robust randomised controlled trial that provides a definitive answer on the clinical effectiveness of collagenase compared with limited fasciectomy surgery.

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Introduction: Lung cancer is the world's leading cause of cancer death. Low-dose computed tomography (LDCT) screening reduced lung cancer mortality by 20% in the US National Lung Screening Trial. Here, we present the Yorkshire Lung Screening Trial (YLST), which will address key questions of relevance for screening implementation.

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Rationale, Aims, And Objectives: Secondary care pharmacists are well positioned within the healthcare system to communicate with patients and provide guidance and advice regarding drug treatments. They are able to broaden the opportunities to raise the profile of Clinical Trials of Investigational Medicinal Products (CTIMPs) and positively influence research. This research aimed to investigate the perceived benefits and barriers of secondary care pharmacists being involved in CTIMPs, their current role, and the perceived benefits and barriers of developing their role in facilitating patient participation for CTIMPs (eg, by identifying or recruiting potential participants).

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Background: Synovitis is believed to play a role in producing symptoms in persons with hand osteoarthritis, but data on slow-acting anti-inflammatory treatments are sparse.

Objective: To determine the effectiveness of hydroxychloroquine versus placebo as an analgesic treatment of hand osteoarthritis.

Design: Randomized, double-blind, placebo-controlled clinical trial with 12-month follow-up.

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Objective: Time-lag from study completion to publication is a potential source of publication bias in randomised controlled trials. This study sought to update the evidence base by identifying the effect of the statistical significance of research findings on time to publication of trial results.

Design: Literature searches were carried out in four general medical journals from June 2013 to June 2014 inclusive (, the and the ).

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Background: Computerised cognitive behaviour therapy (cCBT) has been developed as an efficient form of therapy delivery with the potential to enhance access to psychological care. Independent research is needed which examines both the clinical effectiveness and cost-effectiveness of cCBT over the short and longer term.

Objectives: To compare the clinical effectiveness and cost-effectiveness of cCBT as an adjunct to usual general practitioner (GP) care against usual GP care alone, for a free-to-use cCBT program (MoodGYM; National Institute for Mental Health Research, Australian National University, Canberra, Australia) and a commercial pay-to-use cCBT program (Beating the Blues(®); Ultrasis, London, UK) for adults with depression, and to determine the acceptability of cCBT and the experiences of users.

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Study Question: How effective is supported computerised cognitive behaviour therapy (cCBT) as an adjunct to usual primary care for adults with depression?

Methods: This was a pragmatic, multicentre, three arm, parallel randomised controlled trial with simple randomisation. Treatment allocation was not blinded. Participants were adults with symptoms of depression (score ≥ 10 on nine item patient health questionnaire, PHQ-9) who were randomised to receive a commercially produced cCBT programme ("Beating the Blues") or a free to use cCBT programme (MoodGYM) in addition to usual GP care.

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Rationale, Aims And Objectives: Restricted randomization, such as blocking or minimization, allows for the creation of balanced groups and even distribution of covariates, but it increases the risk of selection bias and technical error. Various methods are available to reduce these risks but there is limited evidence about their current usage, and there are also indications that reporting of these methods may not be adequate. This review aims to identify how frequently different methods of restriction are being used and to assess the reporting of these methods against established reporting standards.

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Background: Osteoarthritis (OA) is the fastest growing cause of disability worldwide. Current treatments for OA are severely limited and a large proportion of people with OA live in constant, debilitating pain. There is therefore an urgent need for novel treatments to reduce pain.

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Background: It is unclear whether more timely cancer diagnosis brings favourable outcomes, with much of the previous evidence, in some cancers, being equivocal. We set out to determine whether there is an association between time to diagnosis, treatment and clinical outcomes, across all cancers for symptomatic presentations.

Methods: Systematic review of the literature and narrative synthesis.

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Rationale, Aims And Objectives: The accurate reporting of the trial methodology and results is essential for accurate judgement on the quality of the research. This review aims to assess the impact of the adequacy of allocation concealment on treatment effect estimates.

Methods: A search was performed in MEDLINE (via the Ovid platform) to identify all randomized controlled trials (RCTs) indexed in January 2011 within its set of 'core clinical journals'.

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Rationale, Aims And Objectives: Randomized controlled trials (RCTs) are powerful tools; it is essential that these trials are not only conducted rigorously, but reported accurately. The aim of this paper was to describe the reporting quality among a set of RCTs published in 2011 on methodological details essential to judging the adequacy of allocation concealment methods employed.

Methods: Medline was searched using the Ovid platform to identify all those RCTs published in January 2011 in core clinical journals.

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Background: Osteoarthritis (OA) is the most common type of arthritis, causing significant joint pain and disability. It is already a major cause of healthcare expenditure and its incidence will further increase with the ageing population. Current treatments for OA have major limitations and new analgesic treatments are needed.

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Background: Chronic back pain is a serious public health issue, associated with poor quality of life and disability. There is a specific group of chronic back pain sufferers whose pain persists despite their having undergone anatomically successful lumbosacral spine surgery. These patients are known as having failed back surgery syndrome (FBSS) and are frequently seen in pain clinics.

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Randomized controlled trials (RCTs) provide the most reliable estimates of the effects of treatments. However, not all treatments are compared in available RCTs, making comparison of treatments problematic. Mixed treatment comparisons (MTCs) can provide estimates of the comparative effects of treatments across a range of available therapeutic options.

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