The study looks at 6,000 patients who got abortion pills after an online appointment. It found that 99.7% of those abortions were not followed by any serious adverse events.

In March, the Supreme Court will hear a case about mifepristone, one of two drugs used in medication abortions. A key question in that case is: Was the Food and Drug Administration correct when it deemed the drug safe to prescribe to patients in a virtual appointment?

A study published Thursday in Nature Medicine looks at abortion pills prescribed via telehealth and provides more support for the FDA’s assessment that medication abortion is safe and effective.

Researchers examined the electronic medical records for more than 6,000 patients from three providers of abortion via telehealth. They also conducted an opt-in survey of 1,600 patients.