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Calculate log-normal distribution parameters from median survival

Source: R/survivalPower_distributions.R
dot-get_lognormal_parameters.Rd

Calculate log-normal distribution parameters from median survival

Usage

.get_lognormal_parameters(median_survival, sigma)

Arguments

median_survival

Median survival time

sigma

Standard deviation of log(T)

Value

List with mu and sigma parameters

Details

For log-normal: log(T) ~ N(mu, sigma^2) Median: m = exp(mu) Therefore: mu = log(m)