se.propratio.ps: Computes the estimate and standard error for a paired-samples log
proportion ratio
Description
Computes a large-sample standard error of a paired-samples log proportion
ratio using the frequency counts from a 2 x 2 contingency table. The log
proportion ratio and standard error output from this function can be used
as input in the meta.ave.gen.log function in applications
where compatible proportion ratios from a combination of 2-group and
paired-samples studies are used in the meta-analysis.