This form can be used as a guide for developing your own data extraction form. Sections can be expanded and added, and irrelevant sections can be removed. It is difficult to design a single form that meets the needs of all reviews, so it is important to consider carefully the information you need to collect, and design your form accordingly. Information included on this form should be comprehensive, and may be used in the text of your review, ‘Characteristics of included studies’ table, risk of bias assessment, and statistical analysis.
Notes on using data extraction form:
Be consistent in the order and style you use to describe the information for each report.
Record any missing information as unclear or not described, to make it clear that the information was not found in the study report(s), not that you forgot to extract it.
Include any instructions and decision rules on the data collection form, or in an accompanying document. It is important to practice using the form and give training to any other authors using the form.
Review title or ID
Study ID (surname of first author and year first full report of study was published e.g. Smith 2001)