Lancet. 2004 May 22;363(9422):1724-7.

Those confounded vitamins: what can we learn from the differences between observational versus randomised trial evidence?

Lawlor DA, Davey Smith G, Kundu D, Bruckdorfer KR, Ebrahim S.

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Department of Social Medicine, University of Bristol, UK. d.a.lawlor@bristol.ac.uk

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Observational versus randomised trial evidence. [Lancet. 2004]
Observational versus randomised trial evidence.Khaw KT, Day N, Bingham S, Wareham N. Lancet. 2004 Aug 28-Sep 3; 364(9436):753-4; author reply 754-5.
Beyond randomised versus observational studies. [Lancet. 2004]
Beyond randomised versus observational studies.Concato J, Horwitz RI. Lancet. 2004 May 22; 363(9422):1660-1.
Observational versus randomised trial evidence. [Lancet. 2004]
Observational versus randomised trial evidence.Wiseman M. Lancet. 2004 Aug 28-Sep 3; 364(9436):755-6; author reply 756-7.

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Observational versus randomised trial evidence. [Lancet. 2004]
Observational versus randomised trial evidence.
Khaw KT, Day N, Bingham S, Wareham N. Lancet. 2004 Aug 28-Sep 3; 364(9436):753-4; author reply 754-5.
Observational versus randomised trial evidence. [Lancet. 2004]
Observational versus randomised trial evidence.
Lawlor DA, Davey Smith G, Bruckdorfer KR, Kundu D, Ebrahim S. Lancet. 2004 Aug 28-Sep 3; 364(9436):755.
Observational versus randomised trial evidence. [Lancet. 2004]
Observational versus randomised trial evidence.
Brotman DJ. Lancet. 2004 Aug 28-Sep 3; 364(9436):757.
Review Interpreting the results of observational research: chance is not such a fine thing. [BMJ. 1994]
Review Interpreting the results of observational research: chance is not such a fine thing.
Brennan P, Croft P. BMJ. 1994 Sep 17; 309(6956):727-30.
Review Do diet, folic acid, and vitamins matter? What did we learn from the Women's Health Initiative, the Women's Health Study, the Women's Antioxidant and Folic Acid Cardiovascular Study, and other clinical trials? [Cardiol Rev. 2007]
Review Do diet, folic acid, and vitamins matter? What did we learn from the Women's Health Initiative, the Women's Health Study, the Women's Antioxidant and Folic Acid Cardiovascular Study, and other clinical trials?
Wenger NK. Cardiol Rev. 2007 Nov-Dec; 15(6):288-90.

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