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Hazard Rate01:11

Hazard Rate

137
The hazard rate, also known as the hazard function or failure rate, is a statistical measure used to describe the instantaneous rate at which an event occurs, given that the event has not yet happened. From a probabilistic perspective, it represents the likelihood that a subject will experience the event in a very small time interval, conditional on surviving up to the beginning of that interval. In terms of frequency, the hazard rate can be viewed as the ratio of the number of events to the...
137
Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

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Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
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Hazard Ratio01:12

Hazard Ratio

158
The hazard ratio (HR) is a widely used measure in clinical trials to compare the risk of events, such as death or disease recurrence, between two groups over time. It reflects the ratio of hazard rates—the instantaneous risk of the event occurring—between a treatment group and a control group. This measure provides valuable insights into the relative effectiveness of a treatment by assessing how the risk of an event differs between the two groups.
For example, in a clinical trial...
158
Documentation in Long-Term and Home Healthcare Setting01:29

Documentation in Long-Term and Home Healthcare Setting

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Documentation in long-term care facilities and home healthcare settings is crucial for ensuring continuous, coordinated, and comprehensive care for patients. Each setting has its specific documentation processes and tools:
Long-Term Care Facilities
922
Health Information Technology and Healthcare Information System01:30

Health Information Technology and Healthcare Information System

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Health Information Technology (HIT)
Health Information Technology, commonly called HIT, integrates advanced information systems and technology in healthcare settings. Its primary functions include:
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Related Experiment Video

Updated: Jul 20, 2025

Development of a Virtual Reality Assessment of Everyday Living Skills
10:32

Development of a Virtual Reality Assessment of Everyday Living Skills

Published on: April 23, 2014

18.5K

Hazard Assessment and Remediation Tool for Simulation-Based Healthcare Facility Design Testing.

Marlena Smith-Millman1, Lorraine Daniels2, Katie Gallagher2

  • 1Immerisve Design Systems, Boston Children's Hospital, MA, USA.

HERD
|August 7, 2023
PubMed
Summary
This summary is machine-generated.

A new tool, the Hazard Assessment and Remediation Tool (HART), reliably identifies built environment hazards in healthcare simulations. This structured observational method aids in optimizing facility safety through objective hazard measurement.

Keywords:
PICUpatient room designpatient safetyresearch instrumentssimulationstaff safetysurveystools

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Area of Science:

  • Healthcare facility design
  • Patient safety research
  • Human factors engineering

Background:

  • Simulation-based testing is crucial for optimizing healthcare environment safety.
  • Current methods rely on subjective debriefing or expert observation.
  • Objective tools are needed for consistent hazard identification.

Purpose of the Study:

  • To develop an objective, structured observational tool for identifying and measuring built environment hazards.
  • To apply this tool to audiovisual recordings of simulations by trained raters.
  • To enhance the safety of healthcare environments through improved facility design.

Main Methods:

  • Defined six hazard categories (e.g., slip/trip risk, impaired access, infection risk) through simulation video review and debriefing.
  • Refined categories and developed operational definitions via iterative coding.
  • Optimized hazard detection using structured coding protocols and specific camera angles.

Main Results:

  • Developed the Hazard Assessment and Remediation Tool (HART).
  • Achieved strong overall inter-rater reliability (Gwet's AC1: 0.89 paired, 0.85 individual).
  • Demonstrated high reliability for most hazard categories (>0.8), with some exceptions requiring further refinement.

Conclusions:

  • HART provides a reliable framework for quantifying built environment hazards in simulations.
  • The tool shows high reliability for paired and single trained raters reviewing video.
  • Future work will assess HART's ability to inform facility design and its transferability to other settings.