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Open Access Are We Missing Anything? Pursuing Research on Attrition Y a-t-il quelque chose qui nous échappe? La poursuite de recherches sur l'attrition

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Abstract:

Attrition, or loss of participants over the course of a study, presents a significant threat to the integrity of a longitudinal research study and theory development resulting from the study. Although there has been a recent resurgence of interest in attrition, it is an underreported and understudied phenomenon despite its potential to introduce bias. Internal and external validity, reliability, and statistical validity are all impacted by a small sample and, most likely, a non-randomness in the study sample. Development of a theory of attrition will assist researchers in development of sampling strategies that will enhance the quality of their data in longitudinal designs. An ecological theoretical model of research participation is proposed and described.

French
L'attrition, ou la perte de participants au cours d'une étude, peut mettre en péril, de façon significative, l'intégrité d'une étude longitudinale et l'élaboration de théories issues de la recherche. Bien que l'attrition fasse récemment l'objet d'un intérêt renouvelé, ce phénomène est peu signalé et peu étudié, malgré le fait qu'il peut potentiellement gauchir les résultats d'une étude. La validité interne et externe, la fiabilité et la validité statistique subissent tous les effets de l'ampleur restreinte et, fort probablement, de la nature non aléatoire d'un échantillonnage. L'élaboration d'une théorie portant sur l'attrition permettra aux chercheurs d'élaborer des stratégies d'échantillonnage qui amélioreront la qualité des données obtenues dans les études longitudinales. L'auteure propose et décrit un modèle théorique écologique relativement à la participation dans le cadre de recherches.

Keywords: PATIENT SELECTION; RESEARCH PARTICIPANTS; RESEARCH-PARTICIPANT RELATIONS; SAMPLE SIZE

Document Type: Research Article

Publication date: 2004-09-01

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