avgHR: avgHR
In mbrueckner/AHR: Estimation and Testing of Average Hazard Ratios

Description Usage Arguments Details Value References See Also Examples

Estimate average hazard ratios from k independent samples

1	avgHR(L, data, method = "km", ...)

`L`	time-limit specifying time-interval [0,L] on which average hazard ratios will be calculated
`data`	data frame (see `data` argument to `ahrWKM` (if `method == "wkm" \|\| "km"`) or `ahrAJ` (if `method == "aj"`))
`method`	method used for estimating survival functions (default: Kaplan-Meier estimator)
`...`	additional arguments passed to `ahrWKM` or `ahrAJ`

This function is a simple wrapper for ahrWKM and ahrAJ.

An object of class '"ahr"'

J.~D. Kalbfleisch and R.~L. Prentice. Estimation of the average hazard ratio. Biometrika, 68(1):105–112, Apr. 1981.

ahrWKM, ahrAJ

T <- c(rexp(100, 1), rexp(100, 2))
C <- c(rexp(100, 1), rexp(100, 2))
Y <- pmin(T, C)
D <- T <= C
Z <- rep(c(0,1), c(100, 100))
fit <- avgHR(2, data.frame(Y=Y, D=D, Z=Z), formula=Surv(Y, D) ~ Z)