The phrase "global prevalence" refers to how widespread or common something is on a global scale. It indicates how many people or instances there are of a particular thing or condition happening around the world. Full definition
Global prevalence of past - year violence against children: A systematic review and minimum estimates. (childtrends.org)
Additionally, cultural values and frequency of S allele carriers negatively predict global prevalence of anxiety and mood disorder. (rspb.royalsocietypublishing.org)
The U.N. Population Division tracks each nation's contraceptive use, finding a 61 percent global prevalence, and noting positively that artificial contraception increased in the developing world by 1 percent per year from 1995 to 2005 and remained steadily high in developed countries. (firstthings.com)