mortAAR you can calculate a life table based on archaeological demographic data. You just need the number of people of a certain age, but you can also use single individual data.
mortAAR allows to separate the data according to sex/location/epoch or any other grouping variable.
What is a life table [aka discrete time survival analysis]? According to Chamberlain it is a
"(...) mathematical device for representing the mortality experience of a population and for exploring the effects on survivorship of age-specific probabilities of death. One reason why life tables have been ubiquitous in demography is that mortality cannot easily be modelled as a single equation or continuous function of age."
To our knowledge as of writing, a simple to use and easily accessible tool to calculate and create archaeological life tables has been lacking. That is why we sat down and put
mortAAR for R together. We hope it will be of use for archaeologists world-wide.
In our view,
mortAAR shines in the following areas:
- Ease and flexibility of input (different kinds of customization and grouping)
- Sophisticated means of computation (exploding of age ranges, separation factor for average lived years)
- Comprehensiveness of output (life tables for all groups specified, plots for the most important measures, relative population calculation)
For further information, please have a look at the Vignettes and the Manual.
if(!require('devtools')) install.packages('devtools') library(devtools) install_github('ISAAKiel/mortAAR')
mortAAR is released under the GNU General Public Licence, version 3. Comments and feedback are welcome, as are code contributions.