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HSLS Systematic Review Program

Time Required to Complete a Review

Mean project length (project start date to review publication date) was 67.3 weeks (SD = 31.0)

Borah R, Brown AW, Capers PL, Kaiser KA. Analysis of the time and workers needed to conduct systematic reviews of medical interventions using data from the PROSPERO registry. BMJ Open. 2017 Feb 27;7(2):e012545:

Example of a time chart for with target dates for accomplishing key tasks (Cochrane Handbook version 5.1)
Month Activity
1 - 2 Prepare protocol
2 - 3 Pilot test eligibility criteria
3 - 8 Search for published and unpublished studies
3 - 8 Inclusion assessments (screening)
3 Pilot test 'risk of bias' instrument
3 - 10 Validity (risk of bias) assessments
3 Pilot test of data collection
3 - 10 Data collection
3 - 10 Data entry
5 - 11 Follow up of missing information
8 - 10 Analysis
1 - 11 Preparation of review report
12 - ? Keeping the review up to date

Higgins J.  Cochrane Handbook for Systematic Reviews of Interventions. Second edition. Wiley-Blackwell.

Note: this timeline has been archived.

How Many Investigators Does It Take?

A survey of 195 completed systematic reviews found they had, on average, five team members.

Borah R, Brown AW, Capers PL, Kaiser KA. Analysis of the time and workers needed to conduct systematic reviews of medical interventions using data from the PROSPERO registry. BMJ Open. 2017 Feb 27;7(2):e012545.