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    Less is more. At least when it comes to diagnosis, where simplifying a tool can make it more readily usable at the bedside. In this issue are several short or shortened tools for diagnosis and prognosis. Shorter tools are not just timesaving: they can be as accurate or more accurate for 2 reasons. First, adding weak diagnostic information to good information can degrade the overall performance: as we add items to a clinical prediction rule …

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