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Related Concept Videos

Confounding in Epidemiological Studies01:27

Confounding in Epidemiological Studies

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Confounding in statistical epidemiology represents a pivotal challenge, referring to the distortion in the perceived relationship between an exposure and an outcome due to the presence of a third variable, known as a confounder. This variable is associated with both the exposure and the outcome but is not a direct link in their causal chain. Its presence can lead to erroneous interpretations of the exposure's effect, either exaggerating or underestimating the true association. This...
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Strategies for Assessing and Addressing Confounding01:25

Strategies for Assessing and Addressing Confounding

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Confounding is a critical issue in epidemiological studies, often leading to misleading conclusions about associations between exposures and outcomes. It occurs when the relationship between the exposure and the outcome is mixed with the effects of other factors that influence the outcome. Given that, addressing confounding is of high importance for drawing accurate inferences in research.
Confounding can be addressed at both the design phase of a study and through analytical methods after data...
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Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
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Related Experiment Video

Updated: Jul 27, 2025

Biomechanical Changes Related to Low Back Pain: An Innovative Tool for Movement Pattern Assessment and Treatment Evaluation in Rehabilitation
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Published on: December 13, 2024

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A Case of Confounding Back Pain.

Cedric A Green1, Lydia Mbatidde2, Jehan R Shah1

  • 1Department of Family Medicine, Mayo Clinic, Jacksonville, FL, USA.

The American Journal of Case Reports
|June 12, 2023
PubMed
Summary

Acute back pain can signal serious conditions like vertebral osteomyelitis, especially with red flag symptoms. Early, thorough evaluation is crucial for timely diagnosis and effective treatment to prevent complications.

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Area of Science:

  • Internal Medicine
  • Infectious Diseases
  • Radiology

Background:

  • Acute back pain is highly prevalent in primary care, affecting over 60% of individuals.
  • Red flag signs like fever or neurological deficits necessitate further investigation.

Observation:

  • A 70-year-old male presented with midthoracic back pain post-hospitalization for sepsis due to multidrug-resistant Escherichia coli UTI.
  • Initial conservative management and radiography were unremarkable.
  • Persistent pain led to MRI, revealing T7-T8 osteomyelitis and discitis.

Findings:

  • CT-guided biopsy confirmed multidrug-resistant E. coli, indicating hematogenous spread from the urinary tract infection.
  • Treatment involved 8 weeks of intravenous ertapenem.

Implications:

  • This case underscores the importance of a broad differential diagnosis for back pain, even in primary care.
  • Maintaining vigilance for red flag symptoms and pursuing appropriate investigations are key for early detection of vertebral osteomyelitis.
  • Prompt management can prevent severe complications associated with spinal infections.