Mixed signals from President Trump are leading insurers to seek higher premium increases.

WASHINGTON — The Trump administration’s own actions are triggering double-digit premium increases on individual health insurance policies purchased by many consumers, a nonpartisan study has found.

The analysis released Thursday by the Kaiser Family Foundation found that mixed signals from President Trump have created uncertainty “far outside the norm,” leading insurers to seek higher premium increases for 2018 than would otherwise have been the case.

The report comes with Republicans in Congress unable to deliver on their promise to repeal and replace the Affordable Care Act. Trump, meanwhile, insists lawmakers try again. The president says “Obamacare” is collapsing, but he’s also threatened to give it a shove by stopping billions of dollars in payments to insurers. Some leading Republicans are considering fallback measures to stabilize markets.

Researchers from the Kaiser foundation looked at proposed premiums for a benchmark silver plan across major metropolitan areas in 20 states and Washington, D.C. Overall, they found that 15 of those cities will see increases of 10 percent or more next year.

The highest: a 49 percent jump in Wilmington, Delaware. Portland’s increase was found to be 17 percent (rising from $341 to $397). The only decline: a 5 percent reduction in Providence, Rhode Island.

About 10 million people who buy policies through HealthCare.gov and state-run markets are potentially affected, as well as another 5 million to 7 million who purchase individual policies on their own.

Consumers in the government-sponsored markets can dodge the hit with the help of tax credits that most of them qualify for to help pay premiums. But off-marketplace customers pay full freight, and they face a second consecutive year of steep increases. Many are self-employed business owners.

The report also found that insurer participation in the ACA markets will be lower than at any time since “Obamacare” opened for business in 2014. The average: 4.6 insurers in the states studied, down from 5.7 insurers this year. In many cases, insurers do not sell plans in every community in a state.

Some of the highest charges could increase before enrollment starts Nov. 1.