External resources
Curated tools and networks that support veterinary and agricultural research synthesis — planning, reporting, and continuous evidence updates.
A hub for veterinary & agricultural reporting guidelines.
Living Review
Continuously updated (“living”) evidence review of livestock interventions with interactive exploration.
VetSRev
A free, searchable database of veterinary systematic reviews maintained by Nottingham’s EBVM group.
RCT–NMA Sample Size Calculators
Determining sample size is a critical step in planning randomized controlled trials. These calculators use prior information from existing research networks to maximize power. They assume that a prior dataset describing the network of evidence is available and help researchers calculate the required sample size to achieve a predefined power for a future study with a binary outcome.
We currently provide two calculators, depending on the trial scenario:
Scenario 1: Designing a direct two-arm trial when both treatments are in the network
For this scenario, the assumption is that both treatments are already in the network, but there is currently no trial comparing the two treatments in the existing network.
This calculator was created by Fangshu Ye. The publication for this work is in review.
Scenario 2: Designing a direct two-arm trial when both treatments are in the network
The scenario of interest is that two treatments are already in the network, either directly or indirectly connected, but one of the goals of the new trial is to include a novel treatment not already represented in the network.
This calculator was created by Dr. Dapeng Hu. The publication for this work is in review.
Questions?
To inquire further about the resources listed, or to recommend other relevant materials, please send us an email.