If there's a scientific study behind it, it's pretty important to define the term. Otherwise the results are pretty meaningless. https://jamanetwork.com/journa

If there's a scientific study behind it, it's pretty important to define the term. Otherwise the results are pretty meaningless. https://jamanetwork.com/journals/jamaneurology/article-abstract/2799140 https://jamanetwork.com/journals/jamaneurology/article-abstr... Of course, the scourge of paywalls prevents me from actually checking what definition the paper used.