# Blog

## What is the fine-gray model?

The Fine-Gray subdistribution hazard model has become the default method to estimate the incidence of outcomes over time in the presence of competing risks. This model is attractive because it directly relates covariates to the cumulative incidence function (CIF) of the event of interest.May 9, 2021

## What is the Fine and Gray regression model?

The Fine-Gray model addresses this issue and has the advantage that the cumulative incidence of the event of interest has a direct link with the estimated sub-distribution hazard, and thus regression coefficients quantify the direct effects of covariates on the cumulative incidence.

## What is Gray's test?

Gray's test is used to evaluate hypotheses of equality of cause-specific cumulative incidence functions between two groups, but as in the case of comparing survival curves, the test actually compares an underlying function of the cumulative incidence function, namely the subdistribution hazard.

## What is a Subhazard ratio?

Ratio of Subhazard Ratio and Cause-Specific Hazard Ratio as a Diagnostic Tool. In the setting of any number of competing events and a binary exposure variable, let denote the cumulative incidence of event at time among the unexposed and the corresponding cumulative incidence for the exposed group where .Jan 20, 2020

## What is fine and gray Subdistribution hazard model?

The subdistribution hazard function, introduced by Fine and Gray, for a given type of event is defined as the instantaneous rate of occurrence of the given type of event in subjects who have not yet experienced an event of that type.Sep 15, 2017

## What is Cox regression used for?

Cox regression (or proportional hazards regression) is method for investigating the effect of several variables upon the time a specified event takes to happen. In the context of an outcome such as death this is known as Cox regression for survival analysis.

## What are Schoenfeld residuals?

The Schoenfeld residual is defined as the covariate value for the individual that failed minus its expected value.

## What causes specific hazard?

The cause-specific hazard function generalizes the classical concept of the hazard function to the competing-risks setting, and it describes the rate of failure from one event type in the presence of others.

## What is cumulative incidence function?

Cumulative incidence function is a proper summary statistics for analyzing competing risks data. Cumulative incidence function is estimated by modeling the cause-specific hazard function of all causes. Gray's test compare the cumulative incidence function directly.

### Is death a censoring event?

In practice, participant death is typically treated as a noninformative censoring event, and treatment and covariate effects are often estimated with the Cox proportional hazards method [7–10].

### What is Aalen Johansen estimator?

The Aalen-Johansen estimator is a multi-state (matrix) version of the Kaplan–Meier estimator for the hazard of a survival process. The estimator can be used to estimate the transition probability matrix of a Markov process with a finite number of states.

### What does a Kaplan Meier curve show?

The Kaplan-Meier estimator is used to estimate the survival function. The visual representation of this function is usually called the Kaplan-Meier curve, and it shows what the probability of an event (for example, survival) is at a certain time interval.May 2, 2019

### How do you calculate cumulative incidence?

Cumulative incidence is calculated as the number of new events or cases of disease divided by the total number of individuals in the population at risk for a specific time interval.