How much of orthodox medicine is evidence based?

According to this table, a condition that is extremely common, and for which many treatments have been intensively researched, has an even higher than average proportion of treatments that are labelled "unknown" efficacy, or in other places "need further study."

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Bibliographische Detailangaben
Veröffentlicht in:	BMJ 2007-11, Vol.335 (7627), p.951-951
1. Verfasser:	Garrow, John S
Format:	Artikel
Sprache:	eng
Schlagworte:	Back pain Complementary therapies Letters Low back pain Randomized controlled trials Studies What to Do about CAM?
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	According to this table, a condition that is extremely common, and for which many treatments have been intensively researched, has an even higher than average proportion of treatments that are labelled "unknown" efficacy, or in other places "need further study."
ISSN:	0959-8138 1468-5833 1756-1833
DOI:	10.1136/bmj.39388.393970.1F