Goodness-of-fit test for censored Z-residuals

Perform a normality goodness-of-fit test for censored Z-residuals using gofTestCensored. This is typically used to assess whether censored Z-residuals are approximately standard normal under the fitted survival model.

Usage

gof.censored.zresidual(censored.Zresidual)

Arguments

censored.Zresidual

Numeric vector (or one-column matrix) of censored Z-residuals. It must carry an attribute "censored.status" giving the censoring indicator (1 = event, 0 = censored) for each observation.

Value

A single numeric value: the p-value from EnvStats::gofTestCensored using the Shapiro–Francia test (test = "sf") for a right-censored normal distribution (distribution = "norm"). Larger p-values indicate no strong evidence against normality of the censored Z-residuals.

Details

Infinite residual values (both positive and negative) are truncated to large finite values (+/- 1e10) before the test is applied. The censoring indicator is taken from the "censored.status" attribute of censored.Zresidual.

See also

gofTestCensored