Children who are particularly irritable, depressive, and anxious might be at greater risk of suicidality in adolescence, according to a population-based cohort study.
Researchers enrolled 1,430 participants from the Québec Longitudinal Study of Child Development, aged 6-12 years, and performed yearly or biyearly assessments over a follow-up of 5 months to 17 years, according to a study published online March 28 in JAMA Psychiatry (doi: 10.1001/jamapsychiatry.2018.0174).
They found that girls who rated highly for irritability and for the depressive/anxious mood profile on the Behavior Questionnaire, a measure created for Canada’s National Longitudinal Study of Children and Youth, had a threefold higher risk of suicidality (odds ratio, 3.07; 95% confidence interval, 1.54-6.12). Meanwhile, boys had a twofold higher risk (OR, 2.13; 95% CI, 0.95-4.78), compared with children with low irritability and depressive/anxious mood.
“Exploratory analyses by sex indicated that this association was more important for girls than boys, as indicated by the need to prevent the exposure among 5 girls to avoid 1 case of suicidality,” wrote Massimiliano Orri, PhD, and his associates.
The rates of suicidality in children with high irritability and high depressive/anxious mood were 16.4%, compared with 11% in the group with the lowest symptom levels.
Even in children with only moderate irritability and low depressive/anxious mood, a significant increase was found in the odds of showing suicidality, compared with the reference group (OR, 1.51; 95% CI, 1.02-2.25).
“Although previous studies reported associations between irritability during childhood and adolescence and later depression, anxiety, and suicidality, we found that even moderate levels of irritability may contribute to suicidal risk,” wrote Dr. Orri of Bordeaux Population Health Research Centre, at the Institut National de la Santé et de la Recherche Medicale in France. “Such results indicate that .”