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Related Concept Videos

Criteria for Causality: Bradford Hill Criteria - II01:28

Criteria for Causality: Bradford Hill Criteria - II

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The Bradford Hill criteria serve as guidelines for establishing causative links in epidemiological research. Beyond Strength, Consistency, Specificity, and Temporality, key criteria also include Biological Gradient, Plausibility, Coherence, Experiment, and Analogy. These principles assist scientists in assessing the likelihood of causation in complex biological contexts. Below is a summary of these concepts:
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Criteria for Causality: Bradford Hill Criteria - I01:30

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Reliability and Validity01:29

Reliability and Validity

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Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
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Data Validation01:15

Data Validation

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Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
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Data Validation01:03

Data Validation

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Data validation is an essential part of a comprehensive assessment. Validation is confirming or verifying and opening the door to gathering more assessment data as it clarifies vague or unclear data. The process of checking and verifying the collected information is called data validation. The primary purpose of data validation is to ensure data is as free from error, bias, and misinterpretation as possible.
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Like benzene, cyclobutadiene and cyclooctatetraene are cyclic compounds with alternate single and double bonds. However, their chemical behavior differs from benzene, as they are unstable and not aromatic. So, what are the structural characteristics of unsaturated compounds categorized as aromatic?  
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Prognostic Validation Using GesEPOC 2017 Severity Criteria.

Carlos Cabrera López1, Ciro Casanova Macario2, José María Marín Trigo3

  • 1Servicio de Neumología, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas de Gran Canaria, España.

Archivos De Bronconeumologia
|February 6, 2019
PubMed
Summary
This summary is machine-generated.

The revised Spanish COPD guidelines (GesEPOC) accurately predict 5-year mortality. However, patient dyspnea and FEV1% offer similar prognostic power for chronic obstructive pulmonary disease survival.

Keywords:
COPDEPOCGesEPOCMortalidadMortalityPrognosisPronósticoRiesgoRisk

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Area of Science:

  • Pulmonology
  • Clinical Medicine
  • Epidemiology

Background:

  • The Spanish COPD guidelines (GesEPOC) have undergone recent modifications.
  • Assessing the impact of these revisions on patient prognosis is crucial.

Purpose of the Study:

  • To evaluate the revised GesEPOC guidelines for severity classification.
  • To assess the 5-year mortality prognosis of patients based on the new GesEPOC criteria.

Main Methods:

  • Prospective follow-up of 700 chronic obstructive pulmonary disease (COPD) patients for 5 years.
  • Data collection included anthropometrics, lung function (FEV1%), mMRC dyspnea scale, BODE, and Charlson indices.
  • Mortality was calculated using the new GesEPOC risk criteria.

Main Results:

  • The high-risk GesEPOC group exhibited significantly higher BODE index and 5-year mortality (31.7%) compared to the low-risk group (15.5%).
  • Dyspnea (mMRC) and FEV1% were identified as independent predictors of mortality.
  • The prognostic strength of dyspnea and FEV1% was comparable to the GesEPOC risk classification.

Conclusions:

  • The updated GesEPOC severity index effectively predicts 5-year mortality in COPD patients.
  • Individual factors like dyspnea and FEV1% demonstrate equivalent prognostic value to the comprehensive GesEPOC classification.