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Activity Number:
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472
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Type:
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Contributed
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Date/Time:
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Wednesday, August 5, 2009 : 10:30 AM to 12:20 PM
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Sponsor:
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Section for Statistical Programmers and Analysts
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| Abstract - #303386 |
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Title:
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Interactive Computer Program for Optimal Designs of Longitudinal Cohort Studies
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Author(s):
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Fetene B. Tekle*+ and Frans E.S. Tan and Martijn Berger
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Companies:
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Tilburg University and Maastricht University and Maastricht University
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Address:
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Departement Methodology and Statistics, Tilburg, 5000 LE, The Netherlands
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Keywords:
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Optimal design ; longitudinal studies ; computer program ; cohort designs ; D-optimal ; relative efficiency
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Abstract:
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Many large scale longitudinal cohort studies are ongoing in different fields of science. Such studies need a careful planning to obtain the desired quality of results with the available resources. In the past, a number of investigations have been performed on optimal designs for longitudinal studies. However, there was no computer-program yet available to help researchers to plan their longitudinal cohort design in an optimal way. We present a new interactive computer-program for the optimal design of longitudinal cohort studies. The computer program helps users to identify the optimal cohort design with an optimal number of repeated measurements per subject and an optimal allocations of time points. Further, users can compute the loss in relative efficiencies of any other alternative design compared to the optimal one. The program is illustrated using a practical research example.
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