When oral testimony is taken from physicians, the usual standard is to state an opinion "within a reasonable degree of medical certainty".

"Assuming she is in a vegetative state, I can say with medical certainty that there is no realistic hope that she'll recover."

In legal cases, "a reasonable degree of medical certainty" is considered the gold standard in making a causal connection.

The autopsy conducted by the county medical examiner showed that the death, to a reasonable medical certainty, was due to a massive overdose of morphine.

The cause of which cannot be determined with reasonable medical certainty.

The causes of couvade syndrome have not yet been determined to a medical certainty, but hypotheses have been advanced.

"A medical certainty," Henry said.

I feel comfortable that within a reasonable degree of medical certainty ephedra was one of the significant factors.

"Doctor, can you state with a reasonable degree of medical certainty that Lisa Steinberg suffered the battered-child syndrome?"

"Can you say that with a medical certainty?"