California has had Tort Reform for over 10 years. What impact has this had on Health Insurance prices?

What impact has it had on medical malpractice insurance rates?
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Nearly zero. The fact is that medical malpractice lawsuits make up 5% of the total medical costs in the USA. Some of these malpractice lawsuits are "frivolous," but surely not all of them. We can say then that "frivolous lawsuits" make up less than 5% of the total cost of healthcare in the United States.
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