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The survival of newly founded firms: a case-study into varying-coefficient models

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The success of a newly founded firm depends on various initial risk factors or start-up conditions such as the market that the business is aiming for, the experience and the age of the founder, the preparation before the launch, the financial frame and the legal form of the firm. These risk factors determine the chance of survival for the venture. However, the effects of these risk factors may change with time. Some effects may vanish whereas others remain constant. We analyse the survival of 1123 newly founded firms in the state of Bavaria, Germany. Our focus is on the investigation of time variation in the effects of risk factors. Time variation is tackled within the framework of varying-coefficient models, where time smoothly modifies the effects of risk factors. An important issue in our analysis is the separation of risk factors which have time-varying effects from those which have time constant effects. We make use of the Akaike criterion to separate these two types of risk factor.
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Keywords: Duration time modelling; Local likelihood; Non-proportional hazard model; Survival data; Varying-coefficient models

Document Type: Research Article

Affiliations: 1: Universität Bielefeld, Germany 2: Ludwig-Maximilians-Universtität, München, Germany 3: Universität Mannheim, Germany

Publication date: 01 January 2005

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