I don't think a child who's 8 years old and puts a rope around his neck is completely aware of being suicidal. I think by definition suicide requires some conscious, motivational component. One of the reasons suicide begins to occur more frequently in adolescence is because puberty is associated with the onslaught of major psychiatric illnesses. Kids are at a time when their control of impulses is not as well-established as when they're older. It's estimated that there are 10 to 25 suicide attempts for every completed suicide.
Women are more likely to attempt suicide than men, while men are more likely to succeed.
Females are twice as likely to suffer from depression, which is why they make more attempts. They are also less violent and impulsive than men, so they use relatively safer means like self-poisoning. Also, the stigma to admit to a failed suicide attempt is greater for men than for women. It still doesn't make sense to me. It's not clear to me what you're really asking me in this interview, actually.