https://www.heart.org/en/news/2018/09/24...worse-for-women

"More than 350,000 cardiac arrests happen outside of U.S. hospitals each year, with about 90 percent of those people dying.

CPR – or cardiopulmonary resuscitation – can double or triple a person’s chance of survival. In 2014, about 45 percent of out-of-hospital cardiac arrest victims survived when bystander CPR was given.

But only about 46 percent of those who suffered cardiac arrests outside of a hospital in 2017 received bystander CPR."