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Towards evidence-based medicine for paediatricians
  1. Bob Phillips
  1. Correspondence to Dr Bob Phillips, Centre for Reviews and Dissemination, University of York, York YO10 5DD, UK; bob.phillips{at}doctors.org.uk

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Spirals of revalidation

In the eyes of those statistically minded, revalidation will make them think of the process of assuring a prediction model, which may be prognostic, diagnostic or risk based, to check it is still valid, perhaps after calibration. Model, in this setting, just means fancy equation, or ‘maths machinery’, rather than tiny die-cast toys. To many clinicians, revalidation just means paperwork and tears.

The basic idea of validation is to check a prediction model, for example, a way of estimating the prognosis of …

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