Some countries with national health insurance plans face a basic problem: Not enough people sign up for those programs, and the ones who do tend to have worse-than-average health. That is a public health matter, but also a fiscal issue. When more healthy people enroll in health care plans, and thus pay premiums, those plans gain a better fiscal footing. What’s a good way to address this challenge? A recently published study in Indonesia led by MIT economists yields new insights, which could apply globally. The study involves a three-pronged…
