Quais são os resultados?

• Qual o resultado geral da revisão sistemática?
• Qual a precisão do risco relativo?

Evidence-Based Medicine Working Group. User's guide to the medical literature: VI. How to use an overview. JAMA 1994; 272(17):1367-1371. Disponível em: URL: http://www.cche.net/text/usersguides/overview.asp

Davey-Smith G, Song F, Sheldom TA. Cholesterol lowering and mortality: the importance of considering initial level of risk. BMJ 1993;306:1367-1373.

Silberberg JS, Henry DA. The benefits of reducing cholesterol levels: the need to distinguish primary from secondary prevention. I: a meta-analysis of cholesterol-lowering trials. Med Aust 1991;155:665-666, 669-670.

• Coletar os dados para calcular o efeito do procedimento;
• Calcular com a meta-análise, risco de evento no grupo experimental e no grupo controle, risco relativo, odds ratio, com os respectivos intervalos de confiança de 95%;
• Interpretar os resultados de uma revisão sistemática da literatura.

Cook DJ, Sackett DL, Spitzer WO. Methodologic guidelines for systematic reviews of randomized control trials in health care from the Potsdam Consultation on Meta-Analysis. J Clin Epidemiol 1995 Jan;48(1):167-71.

Greenhalgh T. How to read a paper: papers that summarise other papers (systematic reviews and meta-analyses) BMJ 1997 Sep 13;315:672-675. Disponível em: URL: http://www.bmj.com/collections/read.shtml

More Informative Abstracts Revisited. Haynes RB, Mulrow CD, Huth EJ, Altman DG, Gardner MJ. Ann Intern Med 1990;113:69-76. Disponível em: URL: http://www.acponline.org/journals/resource/90aim.htm

Irwing L, Tosteson ANA, Gatsonis C, Lau J, Colditz G, Chalmers TC, Mosteller F. Guidelines for meta-analyses evaluating diagnostic tests. Ann Intern Med 1994;120(8):667-676. Disponível em: URL: http://hiru.mcmaster.ca/cochrane/cochrane/sadtdoc1.htm

Jadad AR, Cook DJ, Browman GP. A guide to interpreting discordant systematic reviews. CMAJ 1997 May 15;156(10):1411-6.

http://www.cebm.net/levels_of_evidence.asp
Levels of evidence and grades of recommendation, Centre for Evidence-Based Medicine, Oxford, UK.