sGBJ (version 0.1.1)

sGBJ_scores: Compute the sGBJ statistic along with its p-value quantifying the association between a gene set and survival outcome

Description

Compute the sGBJ statistic along with its p-value quantifying the association between a gene set and survival outcome

Usage

sGBJ_scores(surv, factor_matrix, covariates = NULL, nperm = 300)

Value

a list containing the sGBJ statistic estimation and its associated p-value

Arguments

surv

a Surv object of length n

factor_matrix

a n x p data.frame of the expression for the particular gene set of interest being tested

covariates

a n x l matrix of the covariates to adjust upon. Default is NULL

nperm

number of permutations performed to estimate the epsilon matrix. Default is 300.

Examples

 n <- 100
 surv_data <- data.frame(Time = runif(n = n, min = 0, max = 100),
                         event = rbinom(n = n, size = 1, prob = 0.5))
 surv <- survival::Surv(time = surv_data$Time, event = surv_data$event)

 factor_matrix <- data.frame(P1 = rnorm(n = n),
                              P2 = rnorm(n = n))

 sGBJ::sGBJ_scores(surv,factor_matrix, nperm = 2)

 # with covariates

 covariates <- data.frame(age = runif(n = n, 60, 90))

 sGBJ_scores(surv,factor_matrix, nperm = 2, covariates = covariates)