On the y axis here it's the percent of people with these two conditions who have cardiovascular disease--or stroke rather 5%--less than 5% and a little over 5% with the stroke as the outcome.

轴表示患有心血管疾病的人同时患有,或不患有代谢综合征的百分比,就中风来说,分别是小于5%和略大于5%

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选