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Related Experiment Video

Updated: May 10, 2026

Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease

Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease

Published on: July 24, 2019

Data based medicine and clinical judgement.

David Healy¹, Derelie Mangin, David Antonuccio

¹Department of Psychiatry, Cardiff University, Cardiff, UK. David.Healy54@googlemail.com

The International Journal of Risk & Safety in Medicine

|June 26, 2013

Summary

This summary is machine-generated.

Randomized controlled trials (RCTs) can be misleading due to issues like unpublished data and hidden harms. This article explores how RCT outcomes can be compromised, leading to potentially incorrect conclusions about drug effectiveness.

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Last Updated: May 10, 2026

Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease

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Published on: January 8, 2020

Area of Science:

Medical research methodology
Clinical trial analysis
Evidence-based medicine

Background:

Randomized controlled trials (RCTs) are foundational in assessing drug efficacy.
Concerns exist regarding the integrity and interpretation of RCT evidence.
Issues include non-publication, data access limitations, ghostwriting, and data manipulation.

Purpose of the Study:

To critically evaluate the limitations of RCTs in medical research.
To highlight instances where RCTs may yield misleading results.
To discuss the impact of these limitations on medical practice and patient care.

Main Methods:

Literature review and critical analysis of existing research on RCTs.
Examination of specific examples where RCT outcomes were potentially compromised.
Discussion of methodological and ethical challenges in clinical trial reporting.

Main Results:

RCTs are susceptible to biases from non-publication, restricted data access, and ghostwriting.
When drugs and illnesses share similar effects, RCT outcomes can be profoundly misleading.
Strategies to obscure trial data and patient harms can distort findings.

Conclusions:

The reliability of RCTs is threatened by inherent biases and reporting issues.
Over-reliance on potentially flawed RCT data can compromise medical care.
Further scrutiny and transparency are needed in clinical trial conduct and reporting.