Preston MA, Ross L, Chukmaitov A, et al. - Using a difference-in-differences (DD) approach with a time-series analysis, researchers sought to determine how health insurance mandate variations have affected colorectal cancer screening in the post-Affordable Care Act era based on the U.S. Preventive Services Task Force guidelines. They performed analysis of secondary data from the Behavioral Risk Factor Surveillance System and the NCI State Cancer Legislative Database from 1997 to 2014. Health insurance mandates improved the probability of up-to-date screenings vs noncompliance by 2.8% points. This suggests that such health insurance mandates would result in screening of an estimated 2.37 million additional age-eligible persons. Mean age of compliant participants' was 65 years and 57% were women (n = 32,569). Robustness of the findings was evident for various model specifications. Findings overall suggest that for improving colorectal cancer screenings in the population, as a whole, an effective approach is health insurance mandates that reduce out-of-pocket expenses.