"But when the researchers analyzed the data separately for men and women, they found that while married men were more than 60 percent less likely to arrive late than their single peers, there was no statistically significant difference between married and single women."
This is like that asking-for-directions thing, isn't it? Women are more inclined to seek help, while men like to try to solve problems on their own?
Should unmarried men read this and think I should get a woman, because it might save my life? Of course not! We don't know the full causal effect of these wives. Sure, they got their man to the hospital faster, but why did the man have the heart attack? Maybe she stressed him out with all the nagging about other things he was always supposed to seeking help with, things he could do by himself, wanted to do for himself, and wanted that wife to believe he could do.
NOTE: Stereotypes refer to averages within groups, not what real human individuals do. Personally, I'm not the help-seeking type. I'm just responding to a newspaper article on the level at which it is pitched.