Estimate the Kannisto parameters (Thatcher et al. 1998).
Usage
kannisto.estimate(mx, ages)
Arguments
mx
A vector of mortality rates.
ages
A vector of ages corresponding to mx. These can be indices of age groups or raw ages.
Value
List with the following components:
coefficients:
named vector with Kannisto coefficients \(c\) and \(d\).
fitted.values:
the fitted values
residuals:
input rates minus the fitted values
Details
Given the Kannisto equation \(logit(m_x) = \log(c) + dx\),
the function estimates the \(c\) and \(d\) parameters using
values of ages as the covariate \(x\).
References
Thatcher, A. R., Kannisto, V. and Vaupel, J. W. (1998). The Force of Mortality at Ages 80 to 120,
volume 5 of Odense Monographs on Population Aging Series. Odense, Denmark: Odense University Press.