The Impact of State Tort Reforms on Imaging Utilization

Area of Science:

• Health Services Research
• Medical Economics
• Public Health Policy

Background:

• Defensive medicine, driven by malpractice liability concerns, can lead to unnecessary healthcare expenditures.
• Physicians often cite malpractice liability as a key factor in ordering diagnostic imaging.
• Limited research exists on the systematic impact of liability pressure on overall imaging utilization.

Purpose of the Study:

• To investigate the influence of malpractice liability pressure on radiography ordering practices among office-based physicians.
• To examine the relationship between state tort reforms and the probability of radiography use.

Main Methods:

• Utilized National Ambulatory Medical Care Survey data spanning 1999-2010.
• Employed multivariate difference-in-difference logistic regression analysis.
• Assessed the impact of various state tort reforms on radiography order probabilities for primary care physicians (PCPs) and specialists.

Main Results:

• PCPs showed reduced radiography orders with caps on noneconomic damages, periodic payment reforms, and overall tort reforms.
• Specialists' radiography orders decreased with caps on punitive damages and the total number of medical tort laws.
• Indirect reforms reduced PCP radiography orders, while their repeal increased specialist orders.

Conclusions:

• State tort reforms appear effective in reducing physicians' radiography ordering.
• Reforms that increase the difficulty of suing physicians have a more pronounced effect on reducing radiography use than those directly limiting claim payments.