Publications by authors named "Ashburner"

Introduction: Increasingly, autistic adolescents and adults are accessing occupational therapy. However, limited evidence exists on the type of supports that are important to them. Examining the patterns of supports valued by autistic adolescents and adults will inform the design of occupational therapy services.

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Background: Handheld single-lead electrocardiographic (1L ECG) devices are increasingly used for atrial fibrillation (AF) screening, but their real-world performance is not well understood.

Objectives: The purpose of this study was to quantify the diagnostic test characteristics of 1L ECG automated interpretations for prospective AF screening.

Methods: We calculated the diagnostic test characteristics of the AliveCor KardiaMobile 1L ECG (AliveCor, US) algorithm using unblinded cardiologist overread as the gold standard using single 30s tracings administered by medical assistants among individuals aged ≥65 years participating in the VITAL-AF trial (NCT03515057) of population-based AF screening embedded within routine primary care.

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Article Synopsis
  • The study analyzed the VITAL-AF trial, focusing on one-time ECG screening for atrial fibrillation (AF) to see if it was effective for specific subgroups.
  • Results showed that while the screening increased AF diagnosis rates in a small group of older individuals (mean age 84, 68% female), it did not identify any subgroup where screening was consistently effective based on predicted AF risk.
  • The findings suggest that predicted AF risk is not a reliable indicator of screening effectiveness, indicating a need for caution in assuming that it can guide targeted screening efforts.
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Background: Single-lead electrocardiograms (1L ECGs) are increasingly used for atrial fibrillation (AF) detection. Automated 1L ECG interpretation may have prognostic value for future AF in cases in which screening does not result in a short-term AF diagnosis.

Objective: We sought to investigate the association between automated 1L ECG interpretation and incident AF.

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Background: Adolescence heralds the onset of considerable psychopathology, which may be conceptualized as an emergence of altered covariation between symptoms and brain measures. Multivariate methods can detect such modes of covariation or latent dimensions, but none specifically relating to psychopathology have yet been found using population-level structural brain data. Using voxelwise (instead of parcellated) brain data may strengthen latent dimensions' brain-psychosocial relationships, but this creates computational challenges.

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Background: Secondary prevention interventions to reduce post-stroke cognitive impairment (PSCI) can be aided by the early identification of high-risk individuals who would benefit from risk factor modification.

Aims: To develop and evaluate a predictive model to identify patients at increased risk of PSCI over 5 years using data easily accessible from electronic health records.

Methods: Cohort study that included primary care patients from two academic medical centers.

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Importance: Secondary prevention interventions to reduce post-stroke cognitive impairment (PSCI) can be aided by the early identification of high-risk individuals who would benefit from risk factor modification.

Objective: To develop and evaluate a predictive model to identify patients at increased risk of PSCI over 5 years using data easily accessible from electronic health records.

Design: Cohort study with patients enrolled between 2003-2016 with follow-up through 2022.

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Background And Purpose: In acute spinal cord injury (SCI), magnetic resonance imaging (MRI) reveals tissue bridges and neurodegeneration for 2 years. This 5-year study aims to track initial lesion changes, subsequent neurodegeneration, and their impact on recovery.

Methods: This prospective longitudinal study enrolled acute SCI patients and healthy controls who were assessed clinically-and by MRI-regularly from 3 days postinjury up to 60 months.

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  • Alzheimer's disease is a significant health issue for older adults with Down syndrome, and typical diagnostic methods, like MRI, are often not suitable due to difficulties with prolonged scan times.
  • This study used automated analysis of CT scans from 98 individuals with Down syndrome to identify correlations between brain structure changes and the severity of dementia stages, alongside specific Alzheimer’s biomarkers.
  • The findings indicated that increased dementia severity was linked to reduced gray and white matter volumes in the temporal lobe, suggesting a promising new method for assessing Alzheimer’s in populations that struggle with traditional imaging techniques.
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Background: Consumer wearable devices with health and wellness features are increasingly common and may enhance disease detection and management. Yet studies informing relationships between wearable device use, attitudes toward device data, and comprehensive clinical profiles are lacking.

Methods And Results: WATCH-IT (Wearable Activity Tracking for Comprehensive Healthcare-Integrated Technology) studied adults receiving longitudinal primary or ambulatory cardiovascular care in the Mass General Brigham health care system from January 2010 to July 2021.

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Background: Lifestyle modification programs, such as cardiac rehabilitation, may reduce atrial fibrillation (AF) burden and improve quality of life (QOL), but remain unproven. The objective of this pilot study was to assess feasibility, acceptability, and preliminary effectiveness of an exercise and nutrition-based cardiac rehabilitation-like program for AF patients.

Methods: We enrolled overweight adults aged ≥ 30 years with symptomatic AF in a 12-week cardiac lifestyle group program, including 6 virtual and 6 in-person visits.

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Background: Despite benefits of oral anticoagulation (OAC), many individuals with diagnosed atrial fibrillation (AF) do not receive OAC.

Objective: The purpose of this study was to assess whether cardiac rhythm assessment for AF impacted use of OAC in patients with previously diagnosed AF.

Methods: VITAL-AF was a cluster randomized controlled trial conducted in 16 primary care practices assessing the efficacy of AF rhythm assessment with single-lead electrocardiogram in routine care.

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Article Synopsis
  • The study aimed to understand the characteristics and attitudes of users and non-users of consumer wearable devices designed for health and wellness, focusing on their impact on cardiovascular disease prevention and management.
  • Conducted within the Mass General Brigham healthcare system, the research involved a survey sent to nearly 215,000 patients, where 11,121 responded, revealing that 55.8% were wearable device users, while 95.3% of non-users expressed willingness to use a device if free.
  • Key findings showed that many users had not shared their device data with doctors, yet felt sharing this information was important; factors influencing device usage included age, gender, heart failure status, and income level
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Measuring effort has long been a challenge and this seems particularly true in the case of subjective effort. Koriat et al. compared two types of effort frames, what they call data-driven effort, the amount of effort perceived to be required by a task, and goal-driven effort, the amount of effort one chooses to invest in a task.

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Background: Screening for atrial fibrillation (AF) using consumer-based devices capable of producing a single lead electrocardiogram (1L ECG) is increasing. There are limited data on the accuracy of physician interpretation of these tracings. The goal of this study is to assess the sensitivity, specificity, confidence, and variability of cardiologist interpretation of point-of-care 1L ECGs.

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Background: Screening for atrial fibrillation (AF) is appealing because AF is common, when undiagnosed may increase stroke risk, and stroke is preventable with anticoagulants. This study assessed patient and primary care practitioner (PCP) acceptability of screening for AF using a 30-s single-lead electrocardiogram (SL-ECG) during outpatient visits.

Methods: Secondary analyses of a cluster randomized trial.

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Introduction: A smoking-cessation program was implemented as a randomized non-inferiority trial in primary care practices in Croatia and Slovenia to investigate whether a standard 4-week treatment with cytisine was at least as effective and feasible as a standard 12-week treatment with varenicline in helping smokers quit.

Aims And Methods: Out of 982 surveyed smokers, 377 were recruited to the non-inferiority trial: 186 were randomly assigned to cytisine and 191 to varenicline treatment. The primary cessation outcome was 7-day abstinence after 24 weeks, while the primary feasibility outcome was defined by adherence to the treatment plan.

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Background: A review of existing tools suggested a need for a goal setting tool for autistic people that (1) addresses the heterogeneity of autistic people to the greatest degree possible; (2) addresses a broad range of goals in areas including self-care and home living, and social, community, educational, and employment participation; (3) incorporates autism-specific adaptations such as visual supports; (4) facilitates the initial identification of goals; and (5) enables the prioritization of goals.

Aim: This project aimed to develop a picture-based card-sort goal setting tool with relevant and comprehensible goal cards using a co-design and co-production process.

Methods: The first three of four phases of participatory action research (PAR) used to develop the tool are presented, including (1) initial design by autistic people and professional practitioners, and co-production with an autistic graphic designer; (2) survey of 15 autistic people and 11 family members to evaluate and refine the goals, pictures, and wording; (3) second survey of 23 autistic people and 19 family members to re-evaluate and re-refine the goals, pictures, and wording.

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Background: The prediction of long-term mortality following acute illness can be unreliable for older patients, inhibiting the delivery of targeted clinical interventions. The difficulty plausibly arises from the complex, multifactorial nature of the underlying biology in this population, which flexible, multimodal models based on machine learning may overcome. Here, we test this hypothesis by quantifying the comparative predictive fidelity of such models in a large consecutive sample of older patients acutely admitted to hospital and characterise their biological support.

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We describe CounterSynth, a conditional generative model of diffeomorphic deformations that induce label-driven, biologically plausible changes in volumetric brain images. The model is intended to synthesise counterfactual training data augmentations for downstream discriminative modelling tasks where fidelity is limited by data imbalance, distributional instability, confounding, or underspecification, and exhibits inequitable performance across distinct subpopulations. Focusing on demographic attributes, we evaluate the quality of synthesised counterfactuals with voxel-based morphometry, classification and regression of the conditioning attributes, and the Fréchet inception distance.

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The delivery of evidence-based interventions is an important part of the clinical pathway for many autistic children and their families. However, parents, practitioners, and policymakers face challenges making evidence informed decisions, due to the wide variety of interventions available and the large, and often inconsistent, body of evidence regarding their effectiveness.This is a comprehensive umbrella review, also known as a 'review of reviews', which examined the range of interventions available, the evidence for their effectiveness, and whether effects were influenced by factors relating to individual children (e.

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Importance: Undiagnosed atrial fibrillation (AF) is an important cause of stroke. Screening for AF using wrist-worn wearable devices may prevent strokes, but their cost-effectiveness is unknown.

Objective: To evaluate the cost-effectiveness of contemporary AF screening strategies, particularly wrist-worn wearable devices.

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