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Understanding CPSTF Findings and Recommendations
The Community Preventive Services Task Force (CPSTF) uses the terms below to describe its findings.
The systematic review of available studies provides strong or sufficient evidence that the intervention is effective.
The categories of "strong" and "sufficient" evidence reflect the CPSTF's degree of confidence that an intervention has beneficial effects. They do not directly relate to the expected magnitude of benefits. The categorization is based on several factors, such as study design, number of studies, and consistency of the effect across studies.
The systematic review of available studies provides strong or sufficient evidence that the intervention is harmful or not effective.
The available studies do not provide sufficient evidence to determine if the intervention is, or is not, effective. This does NOT mean that the intervention does not work. It means that additional research is needed to determine whether or not the intervention is effective.
A guide on how to interpret and use insufficient evidence findings is available.