hazard function


Also found in: Dictionary, Thesaurus, Legal, Acronyms, Encyclopedia.

hazard function

A formula used to estimate the prognosis of a person who has already survived an illness for a specific time.
See also: function
References in periodicals archive ?
A nonlinear relationship between the hazard function and predictors is assumed.
PROC NLIN in SAS) to create a piecewise linear model, but it does not require the a priori specification of the number of points of change in the hazard function.
The hazard function covariate definitions are as follows: [S.
These candidate functions provide information as to the sensitivity of the relative risks due to uncertainty with regards to the shape of the hazard function.
It should be noted that despite the apparent bimodal nature of the estimated hazard function (see Figure 4), the hazard analyses utilized in this paper properly relied upon the Weibull hazard function.
In fact, in survival analyses, a decreasing hazard function may be a signal of self-selection into being unemployed and a sign that we are not including relevant variables in the regressions.
Although the shape of the fitted hazard function differs by disability type, many students in each disability category still graduate after 4, 5, or 6 years.
0j] is the baseline hazard function specific to type j hazard at time t, [x.
The difference in hazard function measures between the MCI group and all other groups was statistically much more pronounced than the differences between all groups in the number of items they recalled.
2000), "Residual entropy and its characterizations in terms of hazard function and mean residual life function".
Based on the survival function, one may get the cumulative hazard function [lambda](t)meaning the cumulative risk at specific moment; this is known as the Nelson-Aalen estimator, which accomplishes with the Kaplan-Meiers's estimator properties:
Rai (business statistics, Wayne State University) and Singh (Rapid Global Business Solutions) present methods for arriving at hazard rate estimates when mileage accumulation rates in the vehicle population are available in the case of hard failures, estimating hazard function when mileage accumulation rate is not available, and addressing bias in warranty data due to customer-rush near the warranty expiration limit.
Full browser ?