Treatment randomisation at animal or pen level? : Statistical analysis should follow the randomisation pattern!

Random treatment assignment is essential in demonstrating a causal relationship between a treatment and the outcome of interest. Randomisation ensures that animals assigned to different treatment groups do not differ from each other systematically, except for the randomly assigned treatment. The randomisation pattern should also dictate the statistical analysis.

Déclaration de conflit d'intérêts

Declaration of conflicting interestsThe authors have no conflicts of interest to declare.