Right, but over age 75 one would expect both men and women to be facing the same pressures of potentially (a) stopping work and (b) losing a spouse due to death. It appears that both of those can disproportionately affect males in our culture as men are pressured to work hard and provide for their family [0] and when a spouse dies, men do not have the same "social and familial connections" as women for support [1].
[0] http://link.springer.com/article/10.1007/s00406-003-0397-6#p...