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Randomized Controlled Trials in Pediatric Cardiology: A Power Struggle?
Francisco E Herrera-Carrillo1, Riddhi Patel2, Saul Flores3,4
1Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, Nuevo Leon, Mexico.
Pediatric Cardiology
|November 3, 2022
Summary
Most pediatric cardiology randomized controlled trials lack adequate statistical power. Few studies meet the 80% power threshold, highlighting a need for improved sample size and reporting in clinical research.
Area of Science:
- Pediatric Cardiology
- Clinical Trials
- Biostatistics
Background:
- Pediatric cardiology studies often face limitations in sample size and statistical power due to the rarity of specific congenital heart conditions.
- This study addresses the critical need to evaluate the statistical power of published pediatric cardiology randomized controlled trials.
Approach:
- A systematic review identified 83 pediatric cardiology randomized controlled trials.
- Data on publication year, journal, reporting of 'power' or 'sample size,' and primary endpoints were collected.
- Power analyses assessed if sample sizes achieved 80% power with a p-value < 0.05.
Key Points:
- Only 45% of the reviewed studies had adequate sample size for 80% statistical power.
- Reporting of 'power' or 'sample size' was inconsistent across study sections.
- A majority of studies did not meet the conventional 80% power target.
Conclusions:
- Most pediatric cardiology randomized controlled trials are underpowered, potentially limiting the reliability of their findings.
- Adequately powered studies were more likely to report statistical power and define a primary endpoint.
- Enhancing sample size and transparent reporting are crucial for robust pediatric cardiology research.
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