Epidemiology may be used in evidence, helps justify the origin and certainty of expert opinion, helps in cross-examination.
A relative risk among the exposed of 2.0 or higher is considered persuasive of causation in an individual.
There are guidelines to help US judges to critique epidemiological evidence, no such guidelines exist in the UK.
Evidence from:
Reference Manual on Scientific Evidence. Federal Judicial Center…. 2000 2nd Edition. USA
The Radar report is available to subscribers: