In that sense, an excess risk observed during the early phase of exposure could be congruent with a reverse causation bias, which would not be the case if the increase in risk appeared long after the start of exposure.
This definition covers cases of deterministic causation in which the chance of the effect with the cause is 1 and the chance of the effect without the cause is 0. But it also allows for cases of irreducible probabilistic causation where these chances can take non-extreme values.
When discussing various theories below, we will note which are intended as theories of singular causation, and which as theories of general causation.
Then, representations of deterministic causation can be viewed as a special case of probabilistic causation in which causes are sufficient and necessary for their effects.
Of these, 1489 were classified as causation, of which 215 (14.4%) were judged methodologically sound.
Since the 1960s epidemiology has put forward an often pragmatic multifactorial approach to disease causation, which is dealt with through multivariate statistical modelling.
There is no evidence that childhood BCP ALL is caused by an oncogenic virus (MacKenzie et al, 2006), and the positive association with DP2 suggests that binding of specific peptide(s) and T-cell activation are involved in causation, which is inconsistent with immune evasion by an oncogenic virus.
For decades many incredibly intelligent, well-meaning, scientifically-minded people were absolutely convinced that various experiments and experiences with antiscorbutics proved theories of scurvy causation which we now absolutely dismiss.
And it fits well with the more general counterfactual theory of causation, which many philosophers have found independently plausible.
