CINCINNATI  — Attorneys for news organizations argued Thursday that the U.S. public should be allowed to see federal data about how prescription opioids were distributed as the nation’s overdose crisis was worsening.

They urged a three-judge panel of the 6th U.S. Circuit Court of Appeals in Cincinnati to overturn a lower court judge’s denial of access to the information. The judges will rule later.

“The value of transparency here is great,” said Karen C. Lefton, an Akron, Ohio, attorney representing The Washington Post. The data concerns “a public health crisis” that affects many more people than a typical case, she said.

The data is a key piece of evidence in hundreds of lawsuits filed by state and local governments against companies that make and distribute the drugs. The U.S. Drug Enforcement Administration database details the flow of prescription painkillers to pharmacies, showing the number and doses of pills.