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Systematic reviews: Assess the evidence

Assessing the quality of evidence

Having identified the studies to include in your review, you need to collate the data you have found in a meaningful way.  This will require some knowledge of statistical analysis techniques.

Cochrane Interactive Learning resources

Modules 6-7 of Cochrane Interactive Learning have information on performing a statistical analysis. The Library is subscribing to Cochrane Interactive Learning.

Log in to Module 6: Cochrane Interactive Learning

How to analyse different types of data, effect measures, undertaking meta-analysis, recognising heterogeneity.

Log in to Module 7: Cochrane Interactive Learning

How to interpret results of systematic analysis, using GRADE method to report uncertainty of evidence.


Calculating effect size

Assessing bias

Get help with statistics

Library resources on statistics

A database of e-books that you can search. For example, enter the term 'statistics' or 'Excel' or the name of a statistical package such as 'SPSS'.