Beyond randomised versus observational studies

Affiliations

Comment

John Concato et al. Lancet. 2004.

. 2004 May 22;363(9422):1660-1.

doi: 10.1016/S0140-6736(04)16285-5.

¹ Clinical Epidemiology Research Center, West Haven Veterans Affairs Medical Center, West Haven, Connecticut, USA.

No abstract available

Comment in

Observational versus randomised trial evidence.
Khaw KT, Day N, Bingham S, Wareham N. Khaw KT, et al. Lancet. 2004 Aug 28-Sep 3;364(9436):753-4; author reply 754-5. doi: 10.1016/S0140-6736(04)16924-9. Lancet. 2004. PMID: 15337392 No abstract available.
Observational versus randomised trial evidence.
Lawlor DA, Davey Smith G, Bruckdorfer KR, Kundu D, Ebrahim S. Lawlor DA, et al. Lancet. 2004 Aug 28-Sep 3;364(9436):755. doi: 10.1016/S0140-6736(04)16926-2. Lancet. 2004. PMID: 15337394 No abstract available.
Observational versus randomised trial evidence.
Wiseman M. Wiseman M. Lancet. 2004 Aug 28-Sep 3;364(9436):755-6; author reply 756-7. doi: 10.1016/S0140-6736(04)16927-4. Lancet. 2004. PMID: 15337395 No abstract available.
Observational versus randomised trial evidence.
Brotman DJ. Brotman DJ. Lancet. 2004 Aug 28-Sep 3;364(9436):757. doi: 10.1016/S0140-6736(04)16929-8. Lancet. 2004. PMID: 15337397 No abstract available.

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. Lawlor DA, et al. Lancet. 2004 May 22;363(9422):1724-7. doi: 10.1016/S0140-6736(04)16260-0. Lancet. 2004. PMID: 15158637 No abstract available.
When are observational studies as credible as randomised trials?
Vandenbroucke JP. Vandenbroucke JP. Lancet. 2004 May 22;363(9422):1728-31. doi: 10.1016/S0140-6736(04)16261-2. Lancet. 2004. PMID: 15158638 No abstract available.