AMIA Annual Symposium Proceedings

List of Papers (Total 3,840)

Comparison and combination of several MeSH indexing approaches.

MeSH indexing of MEDLINE is becoming a more difficult task for the group of highly qualified indexing staff at the US National Library of Medicine, due to the large yearly growth of MEDLINE and the increasing size of MeSH. Since 2002, this task has been ...

Optimized dual threshold entity resolution for electronic health record databases--training set size and active learning.

Clinical databases may contain several records for a single patient. Multiple general entity-resolution algorithms have been developed to identify such duplicate records. To achieve optimal accuracy, algorithm parameters must be tuned to a particular ...

A survey of rural hospitals' perspectives on health information technology outsourcing.

A survey of rural hospitals was conducted in the spring of 2012 to better understand their perspectives on health information technology (HIT) outsourcing and the role that hospital-to-hospital HIT partnerships (HHPs) can play as an outsourcing mechanism. ...

Use of simulated physician handoffs to study cross-cover chart biopsy in the electronic medical record.

Clinical handoffs involve the rapid transfer of patient information from one provider or team to another, through activities which may introduce errors and affect care delivery. “Cross-coverage” requires quickly familiarizing oneself with ...

Lessons learned in replicating data-driven experiments in multiple medical systems and patient populations.

Electronic health records are an increasingly important source of data for research, allowing for large-scale longitudinal studies on the same population that is being treated. Unlike in controlled studies, though, these data vary widely in quality, quantity, ...

A modified real AdaBoost algorithm to discover intensive care unit subgroups with a poor outcome.

The Intensive Care Unit (ICU) population is heterogeneous. At individual ICUs, the quality of care may vary within subgroups. We investigate whether poor outcomes of an ICU can be traced back to excess deaths in specific patient subgroups, by discovering ...

Mining echocardiography workflows for disease discriminative patterns.

To provide quick diagnostic insights to medical practitioners into echocardiograms by only analyzing the echocardiogram workflows (defined as the sequence of modalities examined).We define a dictionary of workflows, called subflows, which are commonly ...

Persuasive performance feedback: the effect of framing on self-efficacy.

Self-monitoring technologies have proliferated in recent years as they offer excellent potential for promoting healthy behaviors. Although these technologies have varied ways of providing real-time feedback on a user’s current progress, we have ...

Priority queuing models for hospital intensive care units and impacts to severe case patients.

This paper examines several different queuing models for intensive care units (ICU) and the effects on wait times, utilization, return rates, mortalities, and number of patients served. Five separate intensive care units at an urban hospital are analyzed ...

Genetic variants improve breast cancer risk prediction on mammograms.

Several recent genome-wide association studies have identified genetic variants associated with breast cancer. However, how much these genetic variants may help advance breast cancer risk prediction based on other clinical features, like mammographic ...

Inter-observer reliability assessments in time motion studies: the foundation for meaningful clinical workflow analysis.

Understanding clinical workflow is critical for researchers and healthcare decision makers. Current workflow studies tend to oversimplify and underrepresent the complexity of clinical workflow. Continuous observation time motion studies (TMS) could enhance ...

Using image references in radiology reports to support enhanced report-to-image navigation.

Radiology reports frequently contain references to image slices that are illustrative of described findings, for instance, “Neurofibroma in superior right extraconal space (series 5, image 104)”. In the current workflow, if a report consumer ...

Patient informed governance of distributed research networks: results and discussion from six patient focus groups.

Understanding how to govern emerging distributed research networks is essential to their success. Distributed research networks aggregate patient medical data from many institutions leaving data within the local provider security system. While much is ...

Validation of pre-operative patient self-assessment of cardiac risk for non-cardiac surgery: foundations for decision support.

To better characterize patient understanding of their risk of cardiac complications from non-cardiac surgery and to develop a patient driven clinical decision support system for preoperative patient risk management.A patient-driven preoperative self-assessment ...

Exploring local public health workflow in the context of automated translation technologies.

Despite the growing limited English proficiency (LEP) population in the US, and federal regulations requiring multilingual health information be available for LEP individuals, there is a lack of available high quality multilingual health promotion materials. ...

Predicting clicks of PubMed articles.

Predicting the popularity or access usage of an article has the potential to improve the quality of PubMed searches. We can model the click trend of each article as its access changes over time by mining the PubMed query logs, which contain the previous ...

Adapting comparative effectiveness research summaries for delivery to patients and providers through a patient portal.

Despite increases in the scientific evidence for a variety of medical treatments, a gap remains in the adoption of best medical practices. This manuscript describes a process for adapting published summary guides from comparative effectiveness research ...

A natural language processing algorithm to define a venous thromboembolism phenotype.

Deep venous thrombosis and pulmonary embolism are diseases associated with significant morbidity and mortality. Known risk factors are attributed for only slight majority of venous thromboembolic disease (VTE) with the remainder of risk presumably related ...

Automatically extracting clinically useful sentences from UpToDate to support clinicians' information needs.

Clinicians raise several information needs in the course of care. Most of these needs can be met by online health knowledge resources such as UpToDate. However, finding relevant information in these resources often requires significant time and cognitive ...

Word Sense Disambiguation of clinical abbreviations with hyperdimensional computing.

Automated Word Sense Disambiguation in clinical documents is a prerequisite to accurate extraction of medical information. Emerging methods utilizing hyperdimensional computing present new approaches to this problem. In this paper, we evaluate one such ...

Crowdsourcing the verification of relationships in biomedical ontologies.

Biomedical ontologies are often large and complex, making ontology development and maintenance a challenge. To address this challenge, scientists use automated techniques to alleviate the difficulty of ontology development. However, for many ontology-engineering ...

Semantic annotation of clinical events for generating a problem list.

We present a pilot study of an annotation schema representing problems and their attributes, along with their relationship to temporal modifiers. We evaluated the ability for humans to annotate clinical reports using the schema and assessed the contribution ...

Scalability of abstraction-network-based quality assurance to large SNOMED hierarchies.

Abstraction networks are compact summarizations of terminologies used to support orientation and terminology quality assurance (TQA). Area taxonomies and partial-area taxonomies are abstraction networks that have been successfully employed in support ...

Teleretinal screening for diabetic retinopathy in six Los Angeles urban safety-net clinics: final study results.

In a previous paper, we presented initial findings from a study on the feasibility and challenges of implementing teleretinal screening for diabetic retinopathy in an urban safety net setting facing eyecare specialist shortages. This paper presents some ...

Evaluation of intravenous medication errors with smart infusion pumps in an academic medical center.

While some published research indicates a fairly high frequency of Intravenous (IV) medication errors associated with the use of smart infusion pumps, the generalizability of these results are uncertain. Additionally, the lack of a standardized methodology ...