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Related Concept Videos

Actuarial Approach01:20

Actuarial Approach

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The actuarial approach, a statistical method originally developed for life insurance risk assessment, is widely used to calculate survival rates in clinical and population studies. This method accounts for participants lost to follow-up or those who die from causes unrelated to the study, ensuring a more accurate representation of survival probabilities.
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Clearance Models: Noncompartmental Models01:17

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Clearance is a pharmacokinetic parameter traditionally defined by compartment models, signifying the rate at which a drug is expelled from the body. However, a noncompartmental model offers an alternative method for assessing clearance, primarily employing empirical data obtained after administering a single drug dose.
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Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

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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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Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
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Establishing a Diaphyseal Femur Fracture Model in Mice
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A new FRAX model for Brazil.

B H Albergaria1,2, C A F Zerbini3, M Lazaretti-Castro4

  • 1Osteoporosis Research and Diagnosis Center - CEDOES, Vitoria, Brazil.

Archives of Osteoporosis
|November 28, 2023
PubMed
Summary
This summary is machine-generated.

An updated Fracture Risk Assessment (FRAX) model for Brazil shows lower fracture probabilities than the original. Despite changes, the updated model minimally impacts the risk ranking for osteoporosis.

Keywords:
EpidemiologyFRAXFractureFracture probabilityHip fracture

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Area of Science:

  • Osteoporosis research
  • Epidemiology
  • Public Health

Background:

  • Recent epidemiological data suggests lower hip fracture risk in Brazil than initially estimated.
  • The original Fracture Risk Assessment (FRAX) model for Brazil may overestimate fracture probabilities.

Purpose of the Study:

  • To describe hip fracture epidemiology in Brazil.
  • To synthesize an updated FRAX model for Brazil.
  • To compare fracture probabilities between the original and updated FRAX models.

Main Methods:

  • Combined hip fracture rates from three Brazilian cities, weighted by regional population.
  • Estimated other major osteoporotic fracture incidence using Swedish hip to major fracture ratios.
  • Utilized UN mortality data for Brazil.

Main Results:

  • The updated FRAX model yielded consistently lower 10-year fracture probabilities for men and women across all ages.
  • A high correlation (r > 0.99) was observed between original and updated model probabilities.
  • Revisions to the FRAX model had minimal effect on the rank order of fracture risk.

Conclusions:

  • Updating country-specific FRAX models is crucial when fracture epidemiology significantly changes.
  • The updated Brazilian FRAX model provides a more current assessment of fracture risk.
  • Ongoing epidemiological surveillance is vital for accurate osteoporosis risk prediction.