"It is inevitable that in small towns such as Kawerau, there is a feeling that everyone knows each other, especially among the child or youth populations."
But she did draw comparisons over an "emotional fragility" between all five, as well as issues around relationships, trust, behaviour, communication, substance use, mental health, and an "apparent loss of permanent focus on the future".
Dr Cookson-Cox also singled out fractured relationships with families.
But she said the focus should be on the quality of the environment in which the young people were raised.
"Healthy towns reflect healthy populations and cohorts ... unhealthy towns reflect this in the untimely or premature deaths of its young and most vulnerable populations."
Jordan's mother, Michele Elliott, told the inquest she did not believe the death of her son on October 2, 2010, was related to any of the others.
She described him as sensitive, mild-mannered and happy-go-lucky, with a passion for playing the drums.
The inquest heard that when his stepfather asked whether he would ever take his own life, Jordan replied: "Nah, Dad, you'd have to have balls to do that."
He had left a handwritten note to his family.
"Suicide is a silent curse and as a bereaved mum, it's a horrible thing to go through," Ms Elliott said.
The community had united after the tragedies, and more awareness was being shed on the issue.
"I've lost my son and it's not going to bring him back, but what's going on today will hopefully help families not lose another one."
Dr Cookson-Cox said the community's efforts to promote suicide intervention and "post-vention" were "excellent".
In other measures, courses were run in the town for students last year, the Ministry of Social Development was running a further two courses, a specialist from the Wairarapa had visited and a Maori-led initiative was also under way.
Coroner Wallace Bain reserved his findings.