Mean and Mean difference are the two key statistical measures used in the statistical analysis. Both are essential for meta-analysis as well. Mean and Mean difference are used for the interpretation of a large set of values into a single number which explains the heterogeneity and variation among the individual values. However, one of a common challenge in meta-analysis is the unavailability of this data (mean and standard deviation).
Q & A Forum
Meta Analysis
Q: How should P values be referred in Cochrane reviews?
Cochrane does not support using terms like “statistically insignificant” due to the chance for misinterpretation. For that, researchers should:
- Report accurate P values with confidence intervals.
- Focus on the measure and direction of the effect, rather than just relying on P < 0.05.
- summarize results in context, referring both statistical and scientifically significance.
References:
- Cochrane Handbook for Systematic Reviews of Interventions. (2011). 12.4.2 P values and statistical significance. The Cochrane Collaboration. Retrieved from https://handbook-5-1.cochrane.org/chapter_12/12_4_2_p_values_and_statistical_significance.htm