To develop a composite measure of state‐level malpractice environment.
Public use data from the National Practitioner Data Bank, Medical Liability Monitor, the National Conference of State Legislatures, and the American Bar Association.
Principal component analysis of state‐level indicators (paid claims rate, malpractice premiums, lawyers per capita, average award size, and malpractice laws), with indirect validation of the composite using receiver‐operating characteristic curves to determine how accurately the composite could identify states with high‐tort activity and costs.
A single composite accounted for over 73 percent of total variance in the seven indicators and demonstrated reasonable criterion validity.
An empirical composite measure of state‐level malpractice risk may offer advantages over single indicators in measuring overall risk and may facilitate cross‐state comparisons of malpractice environments.