critical value

(redirected from critical laboratory value)
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critical value

[′krid·ə·kəl ′val·yü]
(mathematics)
The value of the dependent variable at a critical point of a function.
(statistics)
A number which causes rejection of the null hypothesis if a given test statistic is this number or more, and acceptance of the null hypothesis if the test statistic is smaller than this number.
References in periodicals archive ?
Analysis of critical laboratory value nurse-to-physician follow-up calls at a community hospital.
To measure critical laboratory value reporting in multiple institutions over time and to examine the practice patterns and demographic factors associated with sustained improvement in critical value reporting.
While the goals had previously addressed such "hot topics" of communication failure as abbreviation use and report of critical laboratory values, JCAHO most recently turned its attention to hand-off communication (Wilson, 2007, see page 201).

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