discriminant function


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Related to discriminant function: linear discriminant function

dis·crim·i·nant func·tion

a particular combination of continuous variable test results designed to achieve separation of groups; for example, a single number representing a combination of weighted laboratory test results designed to discriminate between clinical classes.

discriminant function

Any algorithm or assessment tool to evaluate disease severity or guide clinical or administrative decisions in health care. In gastroenterology, e.g., a discriminant function is commonly used to gauge the severity of alcoholic hepatitis. It uses two variables, the patient's measured protime (PT) and total serum bilirubin level. The difference between the patient's PT and the control PT is multiplied by 4.6 and added to the bilirubin level. If the derived number is greater than 32, the patient may benefit from treatment with corticosteroids or pentoxifylline.
See also: function
References in periodicals archive ?
This is in agreement with studies of many other gull species, where the total head length was the only measurement that is always presented in discriminant functions derived for sexing (e.
Linear combinations of data were used to form discriminant functions for the separation of categories by minimization of the within-class and between-class ratios of the sum of squares.
The existence of statistically significant discriminant functions to distinguish among the groups defined by the dependent variable.
Finally, we conducted two sets of between-subjects ANOVAs to follow up the discriminant function analysis to determine if there were any differences in any of the specific SPAFF codes for clients who returned compared with those who dropped out, or the counselors for these two client groups.
The present study also revealed that the discriminant function method of making selections in plants appears to be the most useful than the straight selection for grain yield alone and hence, due weightage should be given to the important selection indices while making selection for grain yield advancement in bread wheat.
The discriminant function analysis using the combination of vertical diameter of head and epicondylar breadth shows a classification accuracy of 84%.
The scatter plot resulting from the nacre color typical discriminant functions of the three strains (Fig.
Therefore, the discriminant function requires adjustments in the prediction pattern of deviation of an observation based on the arithmetic mean of all the observations in the evaluated data set (>LCS, Figure 2).
Discriminant functions and graphical representations of the groups, formed according to their most representative factors, were generated using statistical softwares for multivariate analysis.
As gender and ethnicity predicted significant differences among a number of the child and essay characteristics, additional stepwise discriminant function analyses were run to determine if the essay characteristics predictive capabilities when looking at: (a) only female students, (b) only male students, (c) only African American students, and d) only Hispanic students.
An examination of the standardized discriminant function coefficients revealed that ethnic identity had the highest loading (.
The discriminant analysis was used to allow the development of the discriminant function, which will be responsible for discerning consumers who have a tendency to act in a dysfunctional manner from those who do not have this tendency.