Multiple imputation in the outcome evaluation of psychotherapies of variable duration

Crameri, Aureliano; Koemeda, Margit; Schulthess, Peter; Tschuschke, Volker; von Wyl, Agnes

Publication type:	Conference other
Type of review:	Not specified
Title:	Multiple imputation in the outcome evaluation of psychotherapies of variable duration
Authors:	Crameri, Aureliano Koemeda, Margit Schulthess, Peter Tschuschke, Volker von Wyl, Agnes
Conference details:	European Conference on Data Analysis, Luxembourg, 10-12 July 2013
Issue Date:	2013
Language:	English
Subjects:	Missing data; Outpatient psychotherapy; Multiple Imputation; propensity score
Subject (DDC):	150: Psychology
Abstract:	Participants who drop out of studies have on average a poorer outcome than completers and therefore should not be ignored in the evaluation of treatment outcome. Multiple imputation is a technique to obtain unbiased statistical results from incomplete data. We developed a strategy to impute complex longitudinal data from psychotherapies of different lengths using functions from the MICE package in R. Missing data were imputed within a multilevel framework with bayesian or bootstrap methods. Data analysis after imputation encompassed both the calculation of pre-post-differences and the comparison of groups after a propensity score matching. We used a cross-validation to successfully verify the capability of our procedure to discriminate sufficiently between improved patients and those with a poor outcome.
URI:	https://digitalcollection.zhaw.ch/handle/11475/3448
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	Applied Psychology
Organisational Unit:	Psychological Institute (PI)
Appears in collections:	Publikationen Angewandte Psychologie

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Crameri, A., Koemeda, M., Schulthess, P., Tschuschke, V., & von Wyl, A. (2013). Multiple imputation in the outcome evaluation of psychotherapies of variable duration. European Conference on Data Analysis, Luxembourg, 10-12 July 2013.

Crameri, A. et al. (2013) ‘Multiple imputation in the outcome evaluation of psychotherapies of variable duration’, in European Conference on Data Analysis, Luxembourg, 10-12 July 2013.

A. Crameri, M. Koemeda, P. Schulthess, V. Tschuschke, and A. von Wyl, “Multiple imputation in the outcome evaluation of psychotherapies of variable duration,” in European Conference on Data Analysis, Luxembourg, 10-12 July 2013, 2013.

CRAMERI, Aureliano, Margit KOEMEDA, Peter SCHULTHESS, Volker TSCHUSCHKE und Agnes VON WYL, 2013. Multiple imputation in the outcome evaluation of psychotherapies of variable duration. In: European Conference on Data Analysis, Luxembourg, 10-12 July 2013. Conference presentation. 2013

Crameri, Aureliano, Margit Koemeda, Peter Schulthess, Volker Tschuschke, and Agnes von Wyl. 2013. “Multiple Imputation in the Outcome Evaluation of Psychotherapies of Variable Duration.” Conference presentation. In European Conference on Data Analysis, Luxembourg, 10-12 July 2013.

Crameri, Aureliano, et al. “Multiple Imputation in the Outcome Evaluation of Psychotherapies of Variable Duration.” European Conference on Data Analysis, Luxembourg, 10-12 July 2013, 2013.