While childhood externalizing, internalizing and comorbid problems have been associated with suicidal risk, little is known about their specific associations with suicidal ideation and attempts. We examined associations between childhood externalizing, internalizing and comorbid problems and suicidal ideation (without attempts) and attempts by early adulthood, in males and females.

Participants were from the Quebec Longitudinal Study of Kindergarten Children, a population-based study of kindergarteners in Quebec from 1986 to 1988 and followed-up until 2005. We captured the co-development of teacher-rated externalizing and internalizing problems at age 6–12 using multitrajectories. Using the Diagnostic Interview Schedule administered at age 15 and 22, we identified individuals (1) who never experienced suicidal ideation/attempts, (2) experienced suicidal ideation but never attempted suicide and (3) attempted suicide.

The identified profiles were no/low problems (45%), externalizing (29%), internalizing (11%) and comorbid problems (13%). After adjusting for socioeconomic and familial characteristics, children with externalizing (OR 2.00, CI 1.39–2.88), internalizing (OR 2.34, CI 1.51–3.64) and comorbid (OR 3.29, CI 2.05–5.29) problems were at higher risk of attempting suicide (v. non-suicidal) by age 22 than those with low/no problems. Females with comorbid problems were at higher risk of attempting suicide than females with one problem. Childhood problems were not associated with suicidal ideation. Externalizing (OR 2.01, CI 1.29–3.12) and comorbid problems (OR 2.28, CI 1.29–4.03) distinguished individuals who attempted suicide from those who thought about suicide without attempting.

Childhood externalizing problems alone or combined with internalizing problems were associated with suicide attempts, but not ideation (without attempts), suggesting that these problems confer a specific risk for suicide attempts.

虽然童年时期的外化、内化和合并症问题与自杀风险有关，但人们对它们与自杀意念和企图的具体联系知之甚少。我们研究了男性和女性的童年外化、内化和共病问题与自杀意念（没有尝试）和成年早期尝试之间的关联。

参与者来自魁北克幼儿园儿童纵向研究，这是一项基于人群的研究，从 1986 年到 1988 年对魁北克的幼儿园儿童进行了跟踪调查，直到 2005 年。我们捕获了 6-12 岁教师评定的外化和内化问题的共同发展使用多轨迹。使用在 15 岁和 22 岁时实施的诊断访谈时间表，我们确定了以下个人 (1) 从未经历过自杀意念/企图，(2) 经历过自杀意念但从未尝试过自杀，以及 (3) 尝试过自杀。

确定的概况是无/低问题 (45%)、外化 (29%)、内化 (11%) 和合并症 (13%)。调整社会经济和家庭特征后，有外化（OR 2.00，CI 1.39-2.88）、内化（OR 2.34，CI 1.51-3.64）和合并症（OR 3.29，CI 2.05-5.29）问题的儿童企图自杀的风险更高（v.非自杀）到 22 岁时比那些问题很少/没有问题的人。与只有一种疾病的女性相比，患有合并症的女性企图自杀的风险更高。童年问题与自杀意念无关。外化（OR 2.01，CI 1.29-3.12）和共病问题（OR 2.28，CI 1.29-4.03）将尝试自杀的个体与考虑自杀但未尝试自杀的个体区分开来。

单独的童年外化问题或与内化问题相结合与自杀未遂相关，但与意​​念（没有尝试）无关，这表明这些问题赋予自杀未遂的特定风险。