Evid Based Nurs 12:56 doi:10.1136/ebn.12.2.56
  • Treatment

Ginkgo biloba did not prevent dementia or Alzheimer disease in elderly people

Ginkgo biloba v placebo for preventing dementia in elderly people*
At a median 6.1 years
Outcomes Ginkgo biloba Placebo RRI (95% CI) NNH
Dementia 18% 16% 11% (−6 to 29) Not significant
Alzheimer disease 17% 14% 15% (−3 to 35) Not significant
  • *Abbreviations defined in glossary. RRI, NNH, and CI calculated from control event rates and hazard ratios in article.

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