Tools & Techniques - Statistics: Propensity score techniques.

Da Costa, Bruno R; Gahl, Brigitta; Jüni, Peter (2014). Tools & Techniques - Statistics: Propensity score techniques. EuroIntervention, 10(6), pp. 761-767. Europa Digital & Publishing 10.4244/EIJV10I6A130

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Propensity score (PS) techniques are useful if the number of potential confounding pretreatment variables is large and the number of analysed outcome events is rather small so that conventional multivariable adjustment is hardly feasible. Only pretreatment characteristics should be chosen to derive PS, and only when they are probably associated with outcome. A careful visual inspection of PS will help to identify areas of no or minimal overlap, which suggests residual confounding, and trimming of the data according to the distribution of PS will help to minimise residual confounding. Standardised differences in pretreatment characteristics provide a useful check of the success of the PS technique employed. As with conventional multivariable adjustment, PS techniques cannot account for confounding variables that are not or are only imperfectly measured, and no PS technique is a substitute for an adequately designed randomised trial.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Social and Preventive Medicine
04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Cardiovascular Surgery
04 Faculty of Medicine > Pre-clinic Human Medicine > CTU Bern

UniBE Contributor:

Da Costa, Bruno; Gahl, Brigitta and Jüni, Peter

Subjects:

600 Technology > 610 Medicine & health
300 Social sciences, sociology & anthropology > 360 Social problems & social services

ISSN:

1774-024X

Publisher:

Europa Digital & Publishing

Language:

English

Submitter:

Beatrice Minder Wyssmann

Date Deposited:

27 Oct 2014 17:29

Last Modified:

10 Sep 2017 11:57

Publisher DOI:

10.4244/EIJV10I6A130

PubMed ID:

25330508

BORIS DOI:

10.7892/boris.59628

URI:

https://boris.unibe.ch/id/eprint/59628

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