Critical elements of synthesis questions are incompletely reported: survey of systematic reviews of intervention effects

Ref ID 1003
First Author M.S. Cumpston
Journal JOURNAL OF CLINICAL EPIDEMIOLOGY
Year Of Publishing 2023
URL https://www-sciencedirect-com.sheffield.idm.oclc.org/science/article/pii/S0895435623002548?via%3Dihub
Keywords • Low reporting quality
• Public health
Problem(s) • Methods not described to enable replication
• Intervention not described / defined
• Low reporting (PRISMA) quality
• Review question not justified / important
Article Type Empirical
Article Subtype Cross-sectional survey/Methodological systematic review
First Author Country Australia
Aim To examine the characteristics of population, intervention and outcome groups and the extent to which they were completely reported for each synthesis in a sample of systematic reviews (SRs) of interventions.
Level of Investigation Descriptive
Summary of Findings In the 100 randomly sampled Systematic Reviews (SRs) published in 2018 of public health and health systems, authors commonly used population, intervention and outcome groups to structure comparisons, but these groups were often incompletely reported. For example, of 41 SRs that identified and/or used intervention groups for comparisons, 29 (71%) identified the groups in their methods description before reporting of the results (e.g., in the Background or Methods), 12 (29%) defined the groups in enough detail to replicate decisions about which included studies were eligible for each synthesis, 6 (15%) provided a rationale, and 24 (59%) stated that the groups would be used for comparisons. Sixteen (39%) SRs used intervention groups in their synthesis without any mention in the methods.
Number of systematic reviews included 100
Number of eligible systematic reviews assessed 166
Treatment impacted No
Treatment impacted description
Interpretation impacted Not Applicable
Interpretation impacted description