Context How often physicians alter their clinical behavior because of the threat of malpractice liability, termed defensive medicine, and the consequences of those changes, are central questions in the ongoing medical malpractice reform debate. Objective To study the prevalence and characteristics of defensive medicine among physicians practicing in high-liability specialties during a period of substantial instability in the malpractice environment. Design, Setting, and Participants Mail survey of physicians in 6 specialties at high risk of litigation (emergency medicine, general surgery, orthopedic surgery, neurosurgery, obstetrics/gynecology, and radiology) in Pennsylvania in May 2003. Main Outcome Measures Number of physicians in each specialty reporting defensive medicine or changes in scope of practice and characteristics of defensive medicine (assurance and avoidance behavior). Results A total of 824 physicians (65%) completed the survey. Nearly all (93%) reported practicing defensive medicine. "Assurance behavior" such as ordering tests, performing diagnostic procedures, and referring patients for consultation, was very common (92%). Among practitioners of defensive medicine who detailed their most recent defensive act, 43% reported using imaging technology in clinically unnecessary circumstances. Avoidance of procedures and patients that were perceived to elevate the probability of litigation was also widespread. Forty-two percent of respondents reported that they had taken steps to restrict their practice in the previous 3 years, including eliminating procedures prone to complications, such as trauma surgery, and avoiding patients who had complex medical problems or were perceived as litigious. Defensive practice correlated strongly with respondents' lack of confidence in their liability insurance and perceived burden of insurance premiums. Conclusion Defensive medicine is highly prevalent among physicians in Pennsylvania who pay the most for liability insurance, with potentially serious implications for cost, access, and both technical and interpersonal quality of care.

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Context Proponents of restrictions on malpractice lawsuits claim that tort reform will improve access to medical care. Objective To estimate the effects of changes in state malpractice law on the supply of physicians. Design Differences-indifferences regression analysis that matched data on the number of physicians in each state between 1985 and 2001 from the American Medical Association's Physician Masterfile with data on state tort laws and state demographic, political, population, and health care market characteristics. Main Outcome Measure Effect on physician supply of "direct" malpractice reforms that reduce the size of awards (eg, caps on damages). Results The adoption of "direct" malpractice reforms led to greater growth in the overall supply of physicians. Three years after adoption, direct reforms increased physician supply by 3.3%, controlling for fixed differences across states, population, states' health care market and political characteristics, and other differences in malpractice law. Direct reforms had a larger effect on the supply of nongroup vs group physicians, on the supply of most (but not all) specialties with high malpractice insurance premiums, on states with high levels of managed care, and on supply through retirements and entries than through the propensity of physicians to move between states. Direct reforms had similar effects on less experienced and more experienced physicians. Conclusion Tort reform increased physician supply. Further research is needed to determine whether reform-induced increases in physician supply benefited patients.

The study of adverse event disclosure has typically focused on the words that are said to the patient and family members after an event. But there is also growing interest in determining how patients and their families can be involved in the analysis of the adverse events that harmed them. We conducted a two-phase study to understand whether patients and families who have experienced an adverse event should be involved in the postevent analysis following the disclosure of a medical error. We first conducted twenty-eight interviews with patients, family members, clinicians, and administrators to determine the extent to which patients and family members are included in event analysis processes and to learn how their experiences might be improved. Then we reviewed our interview findings with patients and health care experts at a one-day national conference in October 2011. After evaluating the findings, conference participants concluded that increasing the involvement of patients and their families in the event analysis process was desirable but needed to be structured in a patient-centered way to be successful. We conclude by describing when and how information from patients might be incorporated into the event analysis process and by offering recommendations on how this might be accomplished.

The rhetoric of malpractice reform is at fever pitch, but political advocacy does not necessarily reflect grassroots opinion. To determine whether the ongoing liability crisis has greatly reduced physicians' professional satisfaction, we surveyed specialist physicians in Pennsylvania. We found widespread discontent among physicians practicing in high-liability environments, which seems to be compounded by other financial and administrative pressures. Opinion alone should not determine public policy, but physicians' perceptions matter for two reasons. First, perceptions influence behavior with respect to practice environment and clinical decision making. Second, perceptions influence the physician-patient relationship and the interpersonal quality of care.

Our data suggest that claims of a "physician exodus" from Pennsylvania due to rising liability costs are overstated, but the malpractice situation is having demonstrable effects on the supply of specialist physicians in affected areas and their scope of practice, which likely impinges upon patients' access to care.

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