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Time-varying effects when analysing customer lifetime duration, application to the insurance market


Author Info

  • Montserrat Guillen

    (Faculty of Economics, University of Barcelona.)

  • Jens Perch Nielsen

    (Festina Lente and University of Copenhagen.)

  • Tomas Scheike

    (Department of Biostatistics, University of Copenhagen.)

  • Ana Maria Perez-Marin

    (Faculty of Economics, University of Barcelona.)


The Cox model (Cox, 1972) is widely used in customer lifetime duration research, but it assumes that the regression coefficients are time invariant. In order to analyse the temporal covariate effects on the duration times, we propose to use an extended version of the Cox model where the parameters are allowed to vary over time. We apply this methodology to real insurance policy cancellation data and we conclude that the kind of contracts held by the customer and the concurrence of an external insurer in the cancellation influence the risk of the customer leaving the company, but the effect differs as time goes by.

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Bibliographic Info

Paper provided by University of Barcelona, Research Institute of Applied Economics in its series IREA Working Papers with number 200604.

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Length: 21 pages
Date of creation: Dec 2006
Date of revision: Dec 2006
Publication status: Published in Review of Economics, March 1999, pages 1-23
Handle: RePEc:ira:wpaper:200604

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Related research

Keywords: Cox model; customer lifetime.;

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