Abstract
OBJECTIVE
Nonsuicidal self-injury (NSSI) is rare in childhood but becomes prevalent in adolescence, which suggests that early intervention might be indicated. As childhood predictors of NSSI in adolescence are largely unknown, identifying these predictors was the aim of this study.
METHOD
In a birth cohort sample (n = 759) of Norwegian children, NSSI at 12, 14, or 16 years of age was regressed on predictors of NSSI at age 6 (parental factors: depression, parenting stress, negativity/hostility, emotional availability to the child; child factors: temperamental negative affectivity, emotion regulation, symptoms of emotional and behavioral disorders; external events: victimization from bullying, serious negative life events). Semistructured clinical interviews with adolescents and their parents were used to assess DSM-5-defined NSSI and NSSI disorder.
RESULTS
NSSI during the preceding 12 months at 12, 14, or 16 years of age was reported by 81 adolescents (10.0%, 95% CI 8.2-11.9), and NSSI disorder was reported by 20 adolescents (2.7%, 95% CI 1.9-3.8). In multivariable logistic regression analysis, female gender (odds ratio 11.6, 95% CI 4.0-33.5), parenting stress (odds ratio 4.8, 95% CI 1.4-16.5), and parental negativity/hostility (odds ratio 1.8, 95% CI 1.2-2.7) predicted NSSI, whereas child factors and external events were not predictive.
CONCLUSION
Parental factors when the child is 6 years of age-parenting stress and negativity/hostility toward the child-predict NSSI in adolescence. Universal and indicated programs targeting these aspects of parenting during childhood might reduce NSSI in adolescence.
PLAIN LANGUAGE SUMMARY
Almost 1 in 4 adolescents engage in deliberate self-harm without wanting to die from it. However, childhood predictors of nonsuicidal self-injury are largely unknown. This study from Norway followed 759 children from birth until adolescence. The authors found that children who perceived their parents as more negative and hostile at 6 years old were at increased risk of engaging in self-injury when they became adolescents. Children whose parents reported more stress in the parenting role were also at increased risk of engaging in self-harm during adolescence. The authors conclude alleviating parental stress and improving parent-child relations at an early age might decrease the risk of adolescent self-harm.
DIVERSITY & INCLUSION STATEMENT
We worked to ensure race, ethnic, and/or other types of diversity in the recruitment of human participants. We worked to ensure sex and gender balance in the recruitment of human participants. We worked to ensure that the study questionnaires were prepared in an inclusive way. We actively worked to promote sex and gender balance in our author group. The author list of this paper includes contributors from the location and/or community where the research was conducted who participated in the data collection, design, analysis, and/or interpretation of the work.
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