Network Meta-analysis of the behavioral measurement methods on anxiety
behavior in rodents
Abstract
Complex behavioral and psychological constructs, such as anxiety, are
difficult to evaluate in rodents. Many studies have questioned which
techniques and applications for monitoring anxiety behavior and related
physiological parameters are most appropriate for assessing anxiety.
Therefore, we aimed to compare the current methods of assessing anxiety
using network meta-analysis. We performed a comprehensive review and
network meta-analysis by searching electronic databases for animal
studies involving rodents diagnosed with anxiety disorders who were
undergoing behavioral tests. The main outcomes of the study were total
distance traveled, fecal boli, and rearing. To effect sizes from several
studies were combined by calculating standardized mean differences with
their corresponding 95% confidence intervals. Subsequently, behavioral
tests were ranked based on their likelihood of being the most effective
measure for each outcome. Of the 46 studies reviewed, Open Field Test
and Elevated Plus Maze were the most frequently utilized tests,
appearing in 45 and 43 studies, respectively, while Light Dark Box and
Elevated Zero Maze tests were used less frequently (in 2 and 1 studies,
respectively). For total distance traveled, Open Field Test showed a
significant disadvantage relative to Elevated Plus Maze and Light Dark
Box. For Fecal boli, there was a significant difference between Light
Dark Box and Open Field Test. There was no significance between tests in
terms of rearing. Network meta-analysis is a powerful tool for
indicating the effect of tests, indirect estimations, and complexities
of anxiety-related behaviors in rodents in preclinical anxiety models.