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Open Access

Peer-reviewed

Research Article

Are Treatments More Effective than Placebos? A Systematic Review and Meta-Analysis

  • Jeremy Howick ,

    jeremy.howick@phc.ox.ac.uk

    Affiliation Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom

    ⨯
  • Claire Friedemann,

    Affiliation Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom

    ⨯
  • Maria Tsakok,

    Affiliation Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom

    ⨯
  • Robert Watson,

    Affiliation Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom

    ⨯
  • Teresa Tsakok,

    Affiliation Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom

    ⨯
  • Jennifer Thomas,

    Affiliation Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom

    ⨯
  • Rafael Perera,

    Affiliation Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom

    ⨯
  • Susannah Fleming,

    Affiliation Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom

    ⨯
  • Carl Heneghan

    Affiliation Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom

    ⨯

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