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Blue calls—time for a change?
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    Blue calls - analysis of patient outcome with matched controls is needed

    Dear Editor

    Brown and Warwick [1] have published an interesting descriptive study of 'blue calls' made to a single inner city hospital over a 3 month period in 1998. They state that their aim was to determine whether the current system results in inappropriate deployment of hospital staff. However, the results in the published paper do not show whether any of the patients who arrived with a pre-hospital warning ha...

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    Conflict of Interest:
    None declared.