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JAMAevidence Glossary
Terms are derived from
Users' Guides to the Medical Literature: A Manual for Evidence-Based Practice, 2nd Edition
,
The Rational Clinical Examination: Evidence-Based Clinical Diagnosis
and
Care at the Close of Life: Evidence and Experience.
Updated June 2013.
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2
test
A nonparametric test of statistical significance used to compare the distribution of categorical outcomes in two or more groups, the null hypothesis of which is that the underlying distributions are identical.
Xanthochromia
The yellow coloring of cerebrospinal fluid after a hemorrhage. The finding of xanthochromia during lumbar puncture greatly increases the probability of hemorrhage.
Xerostomia
Dryness of the mouth.
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