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Levels of evidence refers to the ranking system used by the PDQ editorial boards to indicate the strength of evidence obtained from cited studies. Get detailed information about how to weigh the strength of the evidence obtained in cancer treatment studies in this information summary.

Levels of Evidence for Integrative, Alternative, and Complementary Therapies is about how to weigh the strength of the evidence obtained in cited research studies. Get detailed information this formal ranking system in this summary for clinicians.

Levels of Evidence for Cancer Screening and Prevention Studies explains how to weigh the strength of the evidence obtained in cited research studies. Get detailed information on this formal ranking system in this summary for clinicians.

Levels of Evidence for Supportive and Palliative Care Summaries includes cited references primarily from the peer-reviewed biomedical literature. Get detailed information about how to weigh the strength of the evidence obtained in supportive and palliative care studies in this clinician summary.

Levels of Evidence for Cancer Genetics Studies addresses the process and challenges of developing evidence-based summaries. Get information about how to weigh the strength of the evidence from cancer genetics studies in this summary for clinicians.

A genome-wide association study is an approach that involves rapidly scanning markers across the complete sets of DNA, or genomes, of many people to find genetic variations associated with a particular disease.

Condom Effectivenss Fact Sheet in Brief

Scientists in CDC's Division of Cancer Prevention and Control author or co-author many articles that are published in scientific journals each year. You can be notified of new CDC cancer research in several ways.

Information about cancer clinical trials at the NIH Clinical Center in Bethesda, Maryland.