ltable (version 2.0.2)

ltable-package: ltable

Description

Constructs tables of counts and proportions out of data sets. Performs log-linear and power analyzes of tabulated data

Author

Ocheredko Oleksandr

Details

Gibbs sampling based log-linear analysis features some advantages against glm {stats}, first of all due to fixing overdispersion by NB2 posterior marginal distribution of counts that insures distinctly less biased covariance estimates, pivot issue for implemented power analysis. In some instances hypothesis testing of higher order effects disagrees with that of glm {stats} on account of larger NB2 model based errors estimates. Another though related enhancement is distinct better fit assessed by sum of squared differences between observed and expected counts. Results of power analysis backed up with MCMC BUGS delivered approach (reference 2).

References

Ocheredko O.M. MCMC Bootstrap Based Approach to Power and Sample Size Evaluation. https://www.amazon.com/gp/product/1946728039/

Examples

require(ltable)
data(sdata, package="ltable")
table_f(sdata, "a")
table_f(sdata, "a", MV=TRUE, extended=TRUE)
table_f(sdata, "a,b,c")
knitr::kable(table_f(sdata, "a,b,c,d", type=2, digits=3))
table_f(sdata, "b,c,a,d", MV=TRUE, extended=TRUE, cb=TRUE)