Publications by authors named "Colin G Walsh"

Background: As multiple strategies have emerged for managing treatment-resistant major depressive disorder, efficient identification of individuals at elevated risk for this outcome earlier in their illness course remains essential.

Method: We extracted electronic health records data for all individuals with a diagnosis of major depressive disorder who received an index antidepressant prescription in the clinical networks of three geographically-distinct health systems - Mass General-Brigham (MGB), Vanderbilt University Medical Center (VUMC), and Geisinger Clinic (GC) - between April 1, 2004, and March 30, 2022. The primary outcome, treatment resistant depression, was defined as provision of electroconvulsive therapy, transcranial magnetic stimulation, vagus nerve stimulation, prescription of either ketamine or esketamine or monoamine oxidase inhibitors (MAOIs), or failed trials of more than two antidepressants.

View Article and Find Full Text PDF

Predictive models that have been made available as clinical decision support systems have not always been used. This qualitative study aimed to identify factors that might impact the uptake of a predictive model recommending either methadone or buprenorphine as medication for opioid use disorder (MOUD) in the inpatient setting. We conducted semi-structured interviews with clinicians who prescribe MOUD and performed a combined deductive and inductive content analysis using a socio-technical model.

View Article and Find Full Text PDF

Objective: Recent advances in the implementation of healthcare artificial intelligence (AI) have drawn attention toward design methods to address the impacts on workflow. Lesser known than human-centered design, Value Sensitive Design (VSD) is an established framework integrating values into conceptual, technical, and empirical investigations of technology. We sought to study the current state of the literature intersecting elements of VSD with practical applications of healthcare AI.

View Article and Find Full Text PDF

Purpose: The value of genetic information for improving the performance of clinical risk prediction models has yielded variable conclusions. Many methodological decisions have the potential to contribute to differential results. We performed multiple modeling experiments integrating clinical and demographic data from electronic health records with genetic data to understand which decisions may affect performance.

View Article and Find Full Text PDF
Article Synopsis
  • Post-marketing safety surveillance can be improved by detecting clinical events through spontaneous reporting, but it requires healthcare professionals to be well-informed and aware of the reporting process.
  • The study introduces a new method for identifying incidents using unstructured clinical data and natural language processing, validated against traditional methods for two specific health concerns: suicide attempts and sleep-related behaviors.
  • Results showed that while the new approach effectively identified suicide attempts with decent precision, it struggled more with sleep-related behaviors; additionally, performance varied by race, highlighting the need for careful monitoring and bias reduction in healthcare AI applications.
View Article and Find Full Text PDF

Importance: The Sentinel System is a key component of the US Food and Drug Administration (FDA) postmarketing safety surveillance commitment and uses clinical health care data to conduct analyses to inform drug labeling and safety communications, FDA advisory committee meetings, and other regulatory decisions. However, observational data are frequently deemed insufficient for reliable evaluation of safety concerns owing to limitations in underlying data or methodology. Advances in large language models (LLMs) provide new opportunities to address some of these limitations.

View Article and Find Full Text PDF

Objectives: The aim of this study was to assess the completeness and readability of generative pre-trained transformer-4 (GPT-4)-generated discharge instructions at prespecified reading levels for common pediatric emergency room complaints.

Materials And Methods: The outputs for 6 discharge scenarios stratified by reading level (fifth or eighth grade) and language (English, Spanish) were generated fivefold using GPT-4. Specifically, 120 discharge instructions were produced and analyzed (6 scenarios: 60 in English, 60 in Spanish; 60 at a fifth-grade reading level, 60 at an eighth-grade reading level) and compared for completeness and readability (between language, between reading level, and stratified by group and reading level).

View Article and Find Full Text PDF

Cross-validation remains a popular means of developing and validating artificial intelligence for health care. Numerous subtypes of cross-validation exist. Although tutorials on this validation strategy have been published and some with applied examples, we present here a practical tutorial comparing multiple forms of cross-validation using a widely accessible, real-world electronic health care data set: Medical Information Mart for Intensive Care-III (MIMIC-III).

View Article and Find Full Text PDF
Article Synopsis
  • This study focuses on treatment-resistant depression (TRD), which affects about one-third of major depressive disorder (MDD) patients, and aims to clarify its genetic basis since previous research hasn't pinpointed specific genetic markers.* -
  • Researchers used electroconvulsive therapy (ECT) as an indicator of TRD and applied machine learning to analyze health records, performing a genome-wide association study involving over 154,000 patients in four large biobanks.* -
  • The findings revealed low heritability estimates and identified two significant genetic loci associated with TRD, suggesting links to other traits like cognition and metabolism, which could have implications for future treatments.*
View Article and Find Full Text PDF

Patients with autism spectrum disorder (ASD) access healthcare frequently, yet little is known about their interactions with patient portals. To describe adults with ASD using patient portal, we conducted regression analyses of visit history, demographics, co-occurring conditions and diagnoses, and patient portal use to determine factors most indicative of whether a patient 1) has sent at least one message (via patient or proxy) and 2) has at least one message sent on their behalf via a proxy account after they turned 18 years old. The 2,412-person cohort had 996 (41.

View Article and Find Full Text PDF

Purpose: Accidental death is a leading cause of mortality among military members and Veterans; however, knowledge is limited regarding time-dependent risk following deployment and if there are differences by type of accidental death.

Methods: Longitudinal cohort study (N = 860,930) of soldiers returning from Afghanistan/Iraq deployments in fiscal years 2008-2014. Accidental deaths (i.

View Article and Find Full Text PDF

Post marketing safety surveillance depends in part on the ability to detect concerning clinical events at scale. Spontaneous reporting might be an effective component of safety surveillance, but it requires awareness and understanding among healthcare professionals to achieve its potential. Reliance on readily available structured data such as diagnostic codes risk under-coding and imprecision.

View Article and Find Full Text PDF

The value of genetic information for improving the performance of clinical risk prediction models has yielded variable conclusions. Many methodological decisions have the potential to contribute to differential results across studies. Here, we performed multiple modeling experiments integrating clinical and demographic data from electronic health records (EHR) and genetic data to understand which decision points may affect performance.

View Article and Find Full Text PDF

Objectives: We evaluated autoencoders as a feature engineering and pretraining technique to improve major depressive disorder (MDD) prognostic risk prediction. Autoencoders can represent temporal feature relationships not identified by aggregate features. The predictive performance of autoencoders of multiple sequential structures was evaluated as feature engineering and pretraining strategies on an array of prediction tasks and compared to a restricted Boltzmann machine (RBM) and random forests as a benchmark.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to evaluate how polygenic scores (PGS) related to psychiatric disorders affect healthcare usage and the burden of comorbid conditions among a large group of participants with linked health records.
  • Using data from approximately 118,882 individuals, researchers found that higher PGS for major depressive disorder was significantly associated with increased visits to emergency departments, inpatient services, and outpatient services, especially after a depression diagnosis.
  • The results indicate that individuals with a higher genetic predisposition to depression tend to use more healthcare resources and experience greater comorbidity, although similar patterns were not observed for bipolar disorder and schizophrenia.
View Article and Find Full Text PDF

Background: Fatal drug overdose surveillance informs prevention but is often delayed because of autopsy report processing and death certificate coding. Autopsy reports contain narrative text describing scene evidence and medical history (similar to preliminary death scene investigation reports) and may serve as early data sources for identifying fatal drug overdoses. To facilitate timely fatal overdose reporting, natural language processing was applied to narrative texts from autopsies.

View Article and Find Full Text PDF