The document discusses the rate at which systematic reviews become outdated. It highlights that 57% of reviews need updating within 5.5 years, 23% within 2 years, 15% within 1 year, and 7% were outdated by the time of publication. The study used survival analysis on 100 systematic reviews published between 1995 and 2005, focusing on changes in statistical significance or effect magnitude as signals for updating.
documents/EFTA00726464.pdf
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