CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne
The most recent articles from:
CMAJ
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Clinical guidelines should be updated to maintain their validity. Our aim was to estimate the length of time before recommendations become outdated. ⋯ Recommendations quickly become outdated, with 1 out of 5 recommendations being out of date after 3 years. Waiting more than 3 years to review a guideline is potentially too long.