A new study from the Health Care Cost Institute study show slightly declining rates of primary care spending as a share of total spending. The research letter, published December 10th in JAMA, analyzed employer-sponsored insurance data from three national payers, finding that share of total spending attributed to primary care declined between 2013 and 2017 using either a broad definition (from 8.97% to 8.04%) or narrow definition (from 4.60% to 4.35%). Though minimal declines, both were statistically significant. The study found that utilization of primary care clinicians increased over the same period.