Journal article
Missing Data: The Importance and Impact of Missing Data from Clinical Research
Brain Impairment, Vol.15(1), pp.1-9
2014
Abstract
There is compelling evidence that traditional methods used to address the detrimental impacts of missing data are inadequate. Despite this, researchers have been slow to utilise newer statistical approaches known to be more effective. The aim of the current article is to offer a conceptual explanation of the rationale for using newer missing data techniques, with a focus on multiple imputation (MI). To illustrate the relative efficacy of deletion, single imputation and multiple imputation techniques in the clinical setting, 20 cases were selected randomly from a population study investigating the cognitive sequelae of traumatic brain injury (TBI), and 8 out of 20 cases had scores on one variable deleted to simulate a missing data set. Comparing the parameter estimates obtained by each technique to the known parameters of the complete data set revealed that MI outperformed deletion and single imputation approaches. It is therefore recommended that more sophisticated techniques such as MI should be considered in clinical research.
Details
- Title
- Missing Data: The Importance and Impact of Missing Data from Clinical Research
- Authors
- Christine R Padgett (Author) - University of TasmaniaClive E Skilbeck (Author) - University of TasmaniaMathew J Summers (Author) - University of Tasmania
- Publication details
- Brain Impairment, Vol.15(1), pp.1-9
- Publisher
- Cambridge University Press
- Date published
- 2014
- DOI
- 10.1017/BrImp.2014.2
- ISSN
- 1443-9646; 1443-9646
- Organisation Unit
- School of Health; School of Social Sciences - Legacy; University of the Sunshine Coast, Queensland; School of Health - Psychology; School of Health and Behavioural Sciences - Legacy
- Language
- English
- Record Identifier
- 99449058102621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Web Of Science research areas
- Clinical Neurology
- Neurosciences
- Rehabilitation
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