In the USA there are about 1,000 cardiac arrests each day. About 70% occur in a private residence. Two-thirds of the victims are male.
In a sample of 50 couples, the result was the same as the prior examination with 30 couples: the percentage of households where each adult could perform a single two-inch compression on their spouse was zero.
Does this mean you shouldn't try? NOT AT ALL!
But it does suggest an alternate strategy: Have a personal AED at home and take it with you when you travel!
This works so much better than the suggestion that both spouses should alter their diets to get to where both weigh about 25% more than the other!