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Sodium cromoglicate: an ineffective drug or meta-analysis misused?
M T Stevens1, A M Edwards, J B L Howell
1emstat@dsl.pipex.com
Pharmaceutical Statistics
|May 30, 2007
Summary
Sodium cromoglicate (SCG) is not ineffective for childhood asthma. Re-evaluation of systematic reviews suggests SCG is effective, particularly in older children, challenging previous conclusions.
Area of Science:
- Pharmacology
- Pediatric Allergy
- Evidence-Based Medicine
Background:
- Sodium cromoglicate (SCG) has been used for asthma and allergic disorders since the 1970s.
- Systematic reviews and guidelines have concluded SCG is ineffective in pediatric asthma.
- Concerns exist regarding the interpretation of previous systematic reviews on SCG efficacy.
Purpose of the Study:
- To critically re-examine the conclusions of systematic reviews on sodium cromoglicate (SCG) in pediatric asthma.
- To investigate potential biases in the interpretation of SCG efficacy data.
- To reassess the overall evidence for SCG's effectiveness in children with asthma.
Main Methods:
- Analysis of systematic reviews and published literature on sodium cromoglicate (SCG) for pediatric asthma.
- Evaluation of changes in SCG formulations and age groups over time.
- Assessment of the totality of evidence across all reported endpoints.
Main Results:
- Previous systematic reviews may have inadequately accounted for formulation changes and varying age groups.
- A significant body of evidence suggests SCG is favored over placebo.
- SCG demonstrates effectiveness, particularly in older children, contrary to prior conclusions.
Conclusions:
- The conclusion of SCG ineffectiveness in pediatric asthma requires re-evaluation.
- Sodium cromoglicate (SCG) appears to be an effective treatment option, especially for older children.
- Further consideration of SCG's efficacy in specific pediatric asthma populations is warranted.
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