In a medical malpractice action, the defendant brought a motion to disqualify the plaintiffs' expert epidemiologist, Dr. Michael Freeman.
The court granted the motion, finding that Dr. Freeman lacked specialized knowledge in the specific medical areas (metabolics and neurology) relevant to the causation question.
His "comparative risk" methodology was deemed outside the mainstream study of epidemiology for specific causation, and his reports indicated a lack of objectivity by primarily critiquing other experts rather than offering independent analysis within his own expertise.
The court also noted that his proposed evidence was not necessary, as the plaintiffs' other expert covered the same points.