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Some variables that had significant impacts upon univariate analysis did not have sufficient
explanatory power to remain in the minimum adequate model or were reflecting other
variables and therefore redundant. These were removed from the analysis, and included;
journal, consideration of socio-economic factors, threat, author residence in relation to country
of study, international NGO and local government funding bodies, single species research
papers, and motivation behind publication.
Other variables with no significance in univariate analysis were included to control for
confounding variables, but none were retained other than year of publication. These were;
citations, type of research, species group, continent of author residence, and whether the
findings were applicable to the area of study only or multiple ecosystem types.
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