Detection of Outliers Due to Participants’ Non-Adherence to Protocol in a Longitudinal Study of Cognitive Decline

Abstract

BACKGROUND Participants' non adherence to protocol affects data quality. In longitudinal studies, this leads to outliers that can be present at the level of the population or the individual. The purpose of the present study is to elaborate a method for detection of outliers in a study of cognitive ageing. METHODS In the Whitehall II study, data on a… (More)
DOI: 10.1371/journal.pone.0132110

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@inproceedings{Dugravot2015DetectionOO, title={Detection of Outliers Due to Participants’ Non-Adherence to Protocol in a Longitudinal Study of Cognitive Decline}, author={Aline Dugravot and S{\'e}verine Sabia and Martin J. Shipley and Catherine Welch and Mika Kivimaki and Archana Singh-Manoux and Antony Bayer}, booktitle={PloS one}, year={2015} }