Reveals improved reliability of NIH Stroke Scale in multicenter settings, suggesting effective training methods.
Video training and certification is a practical and effective method to standardize the use of examination scales. Two cameras must be used during the taping of patients to accurately present the clinical findings. This method is easily adapted to any study in which a large number of investigators will be enrolling patients at multiple clinical centers.
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Lyden et al. (1994) studied this question.
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