Publications by authors named "Daniel Duffy"

Article Synopsis
  • Guided digital mental health interventions that include therapist support are generally more effective than those without guidance.
  • A scoping review was conducted examining 16 studies to explore therapist behaviors, focusing particularly on their actions and feedback towards clients.
  • The review indicates a shift in research from merely identifying therapist behaviors to understanding their impact on treatment outcomes, highlighting areas for improvement in clinical practice and future research.
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Background: In the UK, smoking prevalence in people with depression (34%) and anxiety (29%) is more than double that of the general population (13%). People who stop smoking improve their mental health with comparable effect sizes found for antidepressants. In England, online psychological therapy is a standard treatment for depression and anxiety.

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Background: Despite the importance of assessing the quality with which low-intensity (LI) group psychoeducational interventions are delivered, no measure of treatment integrity (TI) has been developed.

Aims: To develop a psychometrically robust TI measure for LI psychoeducational group interventions.

Method: This study had two phases.

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Liquid crystal elastomer films that morph into cones are strikingly capable lifters. Thus motivated, we combine theory, numerics, and experiments to reexamine the load-bearing capacity of conical shells. We show that a cone squashed between frictionless surfaces buckles at a smaller load, even in scaling, than the classical Seide-Koiter result.

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Background: This study consisted of a qualitative exploration of stakeholder experience regarding the implementation of internet-delivered cognitive behavioral therapy (iCBT) as part of routine service provision within the UK's Improving Access to Psychological Therapies program.

Methods: Stakeholder groups included service providers ( = 6), commercial iCBT representatives ( = 6) and patients who received a course of iCBT as part of treatment at the service ( = 7). Participants took part in a semi-structured interview over the telephone, and subsequent data were qualitatively analyzed using the descriptive-interpretive approach.

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Objective: To evaluate the effects of three adjunctive methods of tension band wire fixation (TBWF) on the biomechanical properties, gap formation, and failure mode in simulated canine patella tendon rupture (RPT).

Study Design: Randomized, ex vivo.

Sample Population: Paired hindlimbs from 32 dog cadavers.

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Background: Research suggests there is heterogeneity in treatment response for internet-delivered cognitive behavioral therapy (iCBT) users, but few studies have investigated the trajectory of individual symptom change across iCBT treatment. Large patient data sets using routine outcome measures allows the investigation of treatment effects over time as well as the relationship between outcomes and platform use. Understanding trajectories of symptom change, as well as associated characteristics, may prove important for tailoring interventions or identifying patients who may not benefit from the intervention.

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Glioblastoma (GBM) is known as the most aggressive type of malignant brain tumour, with an extremely poor prognosis of approximately 12 months following standard-of-care treatment with surgical resection, radiotherapy (RT), and temozolomide treatment. Novel RT-drug combinations are urgently needed to improve patient outcomes. Gold nanoparticles (GNPs) have demonstrated significant preclinical potential as radiosensitizers due to their unique physicochemical properties and their ability to pass the blood-brain barrier.

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Background: Transitional cell carcinoma (TCC) is the most common neoplasia affecting the canine urinary bladder. Partial cystectomy, when used adjuctively with medical management, has been shown to meaningfully extend medial survival time. Surgical stapling devices have a wide variety of uses and advantages over traditional closure methods and, to date, investigation into their use in canine partial cystectomies has not been documented.

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Prevention does not fit well within our problem-oriented medical paradigm in which the focus is on curing or ameliorating existing diseases. It is easier and more satisfying to solve existing problems than it is to advise and motivate patients to implement measures to prevent future problems that may or may not occur. Clinician motivation is further diminished by the time required to help people make lifestyle changes, the low reimbursement rate, and the fact that the benefits, if any, are often not apparent for years.

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Liquid crystalline elastomers (LCEs) are shape-changing materials that exhibit large deformations in response to applied stimuli. Local control of the orientation of LCEs spatially directs the deformation of these materials to realize a spontaneous shape change in response to stimuli. Prior approaches to shape programming in LCEs utilize patterning techniques that involve the detailed inscription of spatially varying nematic fields to produce sheets.

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Article Synopsis
  • The study examined how the angle of Kirschner wire insertion affects the strength of tibial tuberosity osteotomy fixations in dogs.
  • Two groups were tested: one with wires placed at a transverse angle (0 degrees) and another at a caudodistal angle (30 degrees), finding that the transverse group performed significantly better in terms of yield, peak, and failure forces.
  • The research concluded that inserting Kirschner wires at a transverse angle enhances the stability of the bone repair, making this angle a critical factor in surgical procedures involving tibial tuberosity osteotomy in dogs.
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Low-intensity interventions for common mental disorders (CMD) address issues such as clinician shortages and barriers to accessing care. However, there is a lack of research into their comparative effectiveness in routine care. We aimed to compare treatment effects of three such interventions, utilizing four years' worth of routine clinical data.

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Background: The viscoelastic coagulation monitor (VCM Vet) is a novel, portable device that provides a global assessment of hemostasis. The study aims were to evaluate serial viscoelastic analysis during the perianesthetic period in healthy dogs and to compare the agreement between two VCM Vet devices. Twenty healthy dogs undergoing orthopedic surgery were enrolled.

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Objective: To evaluate the effect of a double Krackow suture pattern (DK), with and without epitendinous suture augmentation (ES), in a canine gastrocnemius tendon (GT) model.

Sample: Paired GTs from 12 adult dog cadavers and 4 control GT.

Procedures: GTs were assigned to 2 groups (n = 12/group).

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Objective: To compare the biomechanical properties and gapping characteristics following loop modification of a 3-loop-pulley (3LP) pattern in an ex vivo canine common calcaneal tendon (CCT) avulsion repair model.

Sample: 56 skeletally mature hindlimbs from 28 canine cadavers.

Procedures: The CCTs were randomized to 1 of 4 experimental groups (n = 14/group) then sharply transected at the teno-osseous junction.

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Objective: To evaluate the influence of superficial digital flexor tendon (SDFT) graft augmentation on the biomechanical properties and resistance to gap formation in a canine gastrocnemius tendon repair model.

Sample Population: 28 canine cadaveric hind limbs.

Procedures: Respective hindlimbs from each dog were randomized to one of two groups (n = 14/group) using a 3-loop-pulley (3LP) pattern alone or 3LP + SDFT graft augmentation.

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Objective: To evaluate effects of loop diameter of a modified Kessler locking-loop (LL) suture on in vitro tensile strength and gapping characteristics of canine flexor tendon repairs.

Sample: 48 cadaveric superficial digital flexor tendons from 24 adult medium- to large-breed dogs.

Procedures: Flexor tendons were randomly assigned to 4 groups (n = 12/group) and repaired with 2-0 polypropylene in a LL pattern with loops measuring 1, 2, 3, or 4 mm in diameter.

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The development of patient-centered medical homes in the United States was, among other things, an attempt to improve patients' experiences of care. This and other improvement strategies, however, have failed to confront a major barrier, our disease-oriented medical model. Focusing on diseases has contributed to subspecialization and reductionism, which, for patients, has increased medical complexity and made it more difficult to engage in collaborative decision making.

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A flat sheet programmed with a planar pattern of spontaneous shape change will morph into a curved surface. Such metric mechanics is seen in growing biological sheets, and may be engineered in actuating soft matter sheets such as phase-changing liquid crystal elastomers (LCEs), swelling gels and inflating baromorphs. Here, we show how to combine multiple patterns in a sheet by stitching regions of different shape changes together piecewise along interfaces.

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Background: Clients independently applying Cognitive Behavior Therapy (CBT) skills is an important outcome of CBT-based treatments. The relationship between posttherapeutic CBT skills usage and clinical outcomes remains under-researched-especially after internet-delivered CBT (iCBT).

Objective: Explore contemporaneous and lagged effects of posttherapeutic CBT skills usage frequency on iCBT follow-up outcomes.

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Objective: To evaluate the influence of barbed suture oversew of the transverse staple line during functional end-to-end stapled anastomosis (FEESA) in dogs.

Study Design: Randomized, experimental, ex vivo.

Animals Or Sample Population: Grossly normal jejunal segments from 14 adult canine cadavers.

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Purpose: Despite the growing popularity of stepped-wedge cluster randomized trials (SW-CRTs) for practice-based research, the design's advantages and challenges are not well documented. The objective of this study was to identify the advantages and challenges of the SW-CRT design for large-scale intervention implementations in primary care settings.

Methods: The EvidenceNOW: Advancing Heart Health initiative, funded by the Agency for Healthcare Research and Quality, included a large collection of SW-CRTs.

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Objective: To investigate post-treatment relapse and remission rates 3, 6 and 9 months after completion of an acute phase of a clinician-supported internet-delivered cognitive-behavioural therapy (iCBT) for anxiety and depressive symptoms, within a routine care setting.

Method: Secondary analysis from a 12-month pragmatic randomized-controlled trial delivered within the Improving Access to Psychological Therapies (IAPT) programme in England. Participants in the intervention arm were included if they met criteria for reliable recovery from depression (PHQ-9) and anxiety (GAD-7) at post-treatment assessment.

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Objective: To determine the influence of bone-tunnel anchoring technique on teno-osseous repair of the common calcanean tendon (CCT) in dogs.

Study Design: Randomized, ex vivo, biomechanical.

Population: Forty-two skeletally mature canine hindlimbs.

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