Most health professionals are resistant to statistics. There is nothing inconsistent about it: if they liked Mathematics as a profession, they would have chosen a career in the exact sciences. Clinical dentists are not different: most of them prefer to avoid greater proximity to, and as a consequence , understanding of statistics. Undoubtedly, many statistical procedures involve complex and dif...

Control While many intervention techniques have been developed and applied with varying degrees of success, it remains clear that a comprehensive method for tick control still needs to be realised, especially for resource­constrained farmers. Conventional methods involve the use of commercial acaricides under intense dipping program­ mes. In Zimbabwe, the Department of Veterinary Services (DVS)...

We present a novel approach to constraintbased causal discovery, that takes the form of straightforward logical inference, applied to a list of simple, logical statements about causal relations that are derived directly from observed (in)dependencies. It is both sound and complete, in the sense that all invariant features of the corresponding partial ancestral graph (PAG) are identified, even i...