Suicide attempt predicted by academic performance and childhood IQ: a cohort study of 26 000 children.

Abstract:

OBJECTIVE:Academic performance in youth, measured by grade point average (GPA), predicts suicide attempt, but the mechanisms are not known. It has been suggested that general intelligence might underlie the association. METHODS:We followed 26 315 Swedish girls and boys in population-representative cohorts, up to maximum 46 years of age, for the first suicide attempt in hospital records. Associations between GPA at age 16, IQ measured in school at age 13 and suicide attempt were investigated in Cox regressions and mediation analyses. RESULTS:There was a clear graded association between lower GPA and subsequent suicide attempt. With control for potential confounders, those in the lowest GPA quartile had a near five-fold risk (HR 4.9, 95% CI 3.7-6.7) compared to those in the highest quartile. In a mediation analysis, the association between GPA and suicide attempt was robust, while the association between IQ and suicide attempt was fully mediated by GPA. CONCLUSIONS:Poor academic performance in compulsory school, at age 16, was a robust predictor of suicide attempt past young adulthood and seemed to account for the association between lower childhood IQ and suicide attempt.

journal_name

Acta Psychiatr Scand

authors

Sörberg Wallin A,Zeebari Z,Lager A,Gunnell D,Allebeck P,Falkstedt D

doi

10.1111/acps.12817

subject

Has Abstract

pub_date

2018-04-01 00:00:00

pages

277-286

issue

4

eissn

0001-690X

issn

1600-0447

journal_volume

137

pub_type

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