During his Supreme Court confirmation hearing on Thursday, Judge Brett Kavanaugh referred to some forms of birth control as “abortion-inducing drugs.” The phrase is a characterization that some anti-abortion religious groups use, but it is not supported by scientific evidence.

Judge Kavanaugh used the phrase while answering questions by Senator Ted Cruz, Republican of Texas, about a 2015 dissent he wrote in a case brought by a Catholic organization over a requirement in the federal health care law that employers include contraception coverage in employee health plans. The group, Priests for Life, argued that the provision violated the Religious Freedom Restoration Act, despite an exception allowing employers with religious objections to arrange for a separate insurance company to provide contraceptive coverage.

“They said filling out the form would make them complicit in the provision of the abortion-inducing drugs that they were, as a religious matter, objecting to,” Judge Kavanaugh testified, describing the group’s position.

It was not clear exactly which methods Judge Kavanaugh was referring to when he used the phrase “abortion-inducing drugs.”