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Open Access Controlling Bias in Complex Nursing Intervention Studies: A Checklist L'identification de biais dans les recherches sur les interventions infirmières complexes : une liste de vérification

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Bias is defined as any systematic error resulting in an inaccurate estimate of the outcome of a study. In studies of complex nursing interventions, bias is particularly difficult to control because of issues related to blinding and choice of controls. The authors identify strategies to control bias in intervention studies. They conduct a literature review and consult expert opinion to identify 6 areas of study protocol development that have potential for reducing bias: study concept, definition of intervention, selection of comparisons, randomization/allocation, integrity of intervention, and ascertainment of outcomes. They provide a checklist to help researchers reduce the potential for bias in preparing protocols for complex nursing intervention trials. Use of the checklist can enhance scientific rigour and thus help to ensure that clinicians are ultimately provided with reliable information.

Un biais est défini comme étant toute erreur systématique faussant une estimation des résultats de recherche. Dans des études portant sur des interventions infirmières complexes, les biais sont particulièrement difficiles à repérer en raison de problématiques liées à l'anonymat et au choix des outils d'évaluation. Les auteurs identifient des stratégies de dépistage de biais dans les recherches sur les interventions. Une analyse documentaire et une consultation auprès d'experts révèlent six volets liés au développement de protocoles de recherche qui offrent des possibilités quant à la réduction de biais : le concept de recherche; la définition de l'intervention; le choix des comparaisons; la randomisation/l'allocation; l'intégrité de l'intervention; et la détermination des résultats. Les auteurs proposent une liste de vérification qui aidera les chercheurs à réduire le risque de biais dans le cadre de la préparation de protocoles d'essais portant sur des interventions infirmières complexes. Le recours à une telle liste peut bonifier la rigueur scientifique et assurer aux cliniciens l'accès à une information fiable.

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Document Type: Research Article

Publication date: 2009-12-01

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