How Much of CAM Is Based on Research Evidence?
2011
How Much of CAM Is Based on Research Evidence?
Sample size: 685
Commentary
Evidence: low
Author Information
Author(s): Edzard Ernst
Primary Institution: Peninsula Medical School, Universities of Exeter and Plymouth
Hypothesis
What percentage of complementary and alternative medicine (CAM) is supported by sound research evidence?
Conclusion
Only 7.4% of CAM treatments are based on sound evidence, which may be an overestimate.
Supporting Evidence
- Only 7.4% of CAM treatments are based on sound evidence.
- The estimate may be overly optimistic due to selection bias.
- Several included modalities could be classified as conventional interventions.
Takeaway
The study found that very few CAM treatments are backed by good research, only about 7 out of every 100.
Methodology
The study evaluated 685 treatment/condition pairings from a book and calculated the percentage supported by sound data.
Potential Biases
The analysis may not accurately reflect the true evidence base of CAM practices.
Limitations
The estimate may be overly optimistic due to selection bias in the conditions included.
Digital Object Identifier (DOI)
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